Boss Audio Systems Car Stereo System CCR612 User Manual

APPLICATION NOTE  
User Manual of High-End  
RDS/EON Car Radio System  
CCR612 (V0.3)  
AN96029  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
APPLICATION NOTE  
User Manual of High-End  
RDS/EON Car Radio System  
CCR612 (V0.3)  
AN96029  
Author(s):  
A. Demmers  
M. Verheijden  
Product Concept & Application Laboratory Eindhoven,  
The Netherlands  
Keywords  
Car Radio  
RDS  
RBDS  
EON  
CCR612  
ICE (TEA6811 / TEA6822)  
SOFAC (TEA6320, 6321, 6322 or 6323)  
CD-changer  
Number of pages: 94  
Date: 1996-05-24  
3
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
Summary  
CCR612 is a computer controlled car radio system based on a P83CE528 microcontroller. It controls a high-end  
AM/FM car radio with R(B)DS (Radio Broadcasting Data System), EON (Enhanced Other Network) and various  
I2C-bus controlled peripherals.  
The system contains functions such as PLL tuning, IF control, stereo decoding, RDS/RBDS+EON decoding, IAC,  
sound switching, sound fader control, LCD display, cassette interface, external audio input jack and a detachable  
front. An interface to control a CD-changer is also provided.  
Radio control and RDS/RBDS+EON processing are combined in a single microcontroller.  
4
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
CONTENTS  
1
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11  
1.1  
1.2  
Definitions, Acronyms and Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12  
References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12  
2
HARDWARE CONFIGURATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13  
2.1 Block diagram CCR612 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13  
2.1.1  
2.1.2  
2.1.3  
Main Board Part 1a (Basic AM/FM stereo Radio Part) . . . . . . . . . . . . . . . . . . . 13  
Main Board Part 1b (Optional Power Amplifier, 2 x TDA8561Q) . . . . . . . . . . . 15  
Main Board Part 1c (Optional Source Sel. & Audio Contr.  
HEF4052B/TDA1526) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15  
Main Board Part 2a ( Micro-controller, EEPROM and RDS Demodulator) . . . . 16  
Main Board Part 2b (Detachable Front) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16  
Main Board Part 3 (Cassette Interface including Dolby B*) . . . . . . . . . . . . . . . 16  
Front Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17  
2.1.4  
2.1.5  
2.1.6  
2.1.7  
2.1.7.1  
2.1.7.2  
Front Panel Part FP-1a (Key and Display panel) . . . . . . . . . . . . . . 17  
Front Panel Part FP-1b (Detachable Front Version). . . . . . . . . . . 17  
2.1.8  
2.1.9  
2.1.10  
Diagram ICE module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17  
Diagram PACS Sub Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18  
PCB LAY-OUTS of CCR612 sample Version D. . . . . . . . . . . . . . . . . . . . . . . . . 18  
2.2  
Performance of the radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19  
3
4
SHORT SPECIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23  
CCR612S PINNING AND INTERFACING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30  
4.1  
4.2  
Pinning overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30  
Factory options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38  
4.2.1  
4.2.2  
Diode options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38  
Automatically detected options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39  
4.3  
4.4  
I2C bus addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39  
The keyboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39  
4.4.1  
4.4.2  
4.4.3  
Fixed keyboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40  
Detachable keyboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40  
Keyboard options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41  
4.5  
4.6  
4.7  
Power stabilizer interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42  
LCD display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44  
Non Volatile Memory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45  
5
6
KEY FUNCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46  
FUNCTIONAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57  
6.1  
6.2  
Switching on / off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57  
Tuning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58  
6.2.1  
6.2.2  
6.2.3  
Band switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58  
Manual/search tuning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58  
Frequency scan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60  
5
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
6.2.4  
6.2.5  
6.2.6  
6.2.7  
Selecting preset stations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60  
Storing stations in preset memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60  
AST search . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61  
The LOCAL/DX key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61  
6.3  
6.4  
CD-Changer, Cassette and external source interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61  
6.3.1  
6.3.2  
6.3.3  
6.3.4  
The MODE key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62  
CD-changer mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62  
Cassette functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63  
External audio source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63  
Audio control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63  
6.4.1  
6.4.2  
6.4.3  
6.4.4  
6.4.5  
6.4.6  
6.4.7  
The SELECT key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64  
Changing a setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64  
The LOUD key / RESET function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64  
The MUTE key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65  
Phone mute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65  
Power amplifier diagnostics control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65  
User programmable options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65  
6.5  
RDS / RBDS functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66  
6.5.1  
6.5.2  
6.5.3  
6.5.4  
AF follow mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66  
PTY functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67  
Traffic announcements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68  
PTY alarm broadcasts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68  
7
RDS / RBDS FACILITIES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69  
7.1  
7.2  
7.3  
7.4  
7.5  
7.6  
Programme Identification code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69  
Programme Service name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69  
Programme TYpe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69  
Traffic Announcements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70  
Alternative Frequency following . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70  
EON preset update . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71  
APPENDIX I NVM layout and initialisation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72  
APPENDIX II Segment addresses for 143 segment display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77  
APPENDIX III LCD Display Character Set. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79  
APPENDIX IV CIRCUIT DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80  
6
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
Modification with respect to old documents:  
This document replaces the following two documents:  
User Manual of Computer Controlled Car Radio System CCR612 V0.2  
AN95081  
Diagrams and Performance of R(D)BS Car Radio CCR612 with Cassette Deck and CDC Changer  
(V1.1) AN95070  
Change history of: User Manual of High-End RDS/EON Car Radio System  
CCR612S  
Modifications with respect to the application note " User Manual of High-End RDS/EON Car Radio System  
CCR612S (Version 0.2)", report number AN95081.  
1.  
2.  
3.  
Added use of more types of Sofac(TEA6320, TEA6321, TEA6322, TEA6323), adapted sound setting  
Band selection diode 2 moved to other pin  
Sleeptimer changed from 30 minutes to 1 hour  
Modifications with respect to the application note " User Manual of High-End RDS/EON Car Radio System  
CCR610S (Version 0.1)", report number AN94065.  
1.  
2.  
3.  
TEA6821 replaced by TEA6822.  
Frequency counter resolution for FM changed from 5 kHz to 6.25 kHz.  
Volume level during traffic announcements made adjustable by the user in the option programming  
menu.  
4.  
5.  
6.  
7.  
8.  
9.  
PTY search algorithm changed.  
Functionality of PTY icon changed.  
Manual tuning algorithm changed.  
For MW band only tuning on grid is possible.  
Manual tuning grid for USA option changed from 50 kHz to 100 kHz.  
Search tuning grid for USA option changed from 100 kHz to 200 kHz.  
10. Pin 9 of the microcontroller (SECUR) not used any more (security functionality stays the same).  
11. Input added for "Phone mute".  
12. Checking on not initialized EEPROM and preprogramming them with default values (listed in  
appendix II) at radio switch on.  
13. Polarity of pin EXSTAT changed.  
14. Crystal frequency of microcontroller changed from 8.664 MHz to 12 MHz.  
15. PTY code not longer stored in EEPROM.  
16. When RDS regional mode is on, the radio is now also allowed to switch over to stations with the  
same PI-code but its regional code set to "Supra regional".  
17. Display message during AST search changed from "AST SCAN" to "STORE".  
7
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
Change history of: Diagrams and performance of R(B)DS Car Radio CCR612 with  
Cassette Deck.  
DIFFERENCES WITH PREVIOUS CCR612 (AN95070).  
Mainboard part 1:  
Two diodes were added to improve reset behaviour  
In case a static on/off key is used, C144/C154/C151 must be 10µF i.s.o. 100nF.  
Mainboard part 2:  
Option diode D8 is removed. Option diode D2 is now connected to pin 21.  
Option diode D4 and D6 are removed.  
DIFFERENCES WITH PREVIOUS CCR612 (AN94067).  
This note, Diagramsand Performance, valid for CCR612radio sample(version D)controlled byCCR610S  
or CCR612S software (the latter, also for CDC-changer control), differs mainly from the previous one  
(Version 1.0) by the following modifications and corrections.  
Modifications and Improvements.  
General:  
Component numbering CCR612 radio sample. Unlike previous note, the electricalcomponent numbers  
of the PCB boards (Fig. 13b and Fig. 13d) do match with the electrical diagrams (Fig.4, Fig.7 and Fig.9),  
which belong to the CCR612 radio sample (Version D).  
Main Board part 1a, 1b and 1c (pages 14, 15 and 16).  
- A CDC-changer interface circuit has been introduced, using an extra TDA8579T and intended for  
CDC-changer SCC600, controlled by CCR612S software.  
- Switched battery voltage circuit improved. Which delivers for external use a battery voltage only  
when the radio is in the Power On mode for; supplying the illumination of the detachable front and  
delivering a switched plus voltage for the line-out, motor antenna and CDC-changer.  
- A telephone mute circuit between Connector Block and Micro Controller pins (AUMUTE and  
OPTROW) has been introduced. For this feature the former security contact is used. In general this  
is not a problem because the trend to use a security contact is decreasing by the use of detachable  
fronts.  
- For part 1c only, the bleep input is moved from the source selector (HEF4052B) input to the Audio  
Pre Amplifier (TDA6320T) input.  
Main Board part 2a and 2b (Page 17 and Page 18 ).  
8
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
- Telephone mute circuit, between optrow (40) and Aumute (43) introduced.  
- The use of one crystal (8.66 MHz) for both micro and RDS demodulator is not possible in this set.  
Because for improved RDS behaviour more ’speed’ is needed which requires a crystal of 12 MHz  
for the micro and 8.66 MHz or 4.33 MHz for the RDS demodulator.  
- For part 2b only, in the lines ON/OFF, DATA and SCL between detachable front and micro ESD  
protection circuits are introduced which consists of a few resistors, zener diode 5V6 (BZX79C) and  
2 diodes (BAV99).  
Key and Display panel SB1b (Page 21).  
- Following a now a days trend the power switch, in the ON/OFF radio line,is moved to the detachable  
front. That means two extra contacts on both detachable front and radio are needed.  
Diagram ICE Module (page 22).  
- The diagram of the ICE module (Euro 1, standard) is modified, the "second" IC TEA6821 is replaced  
by the successor TEA6822.  
- The diagram of the ICE module (Euro 1, standard) is modified, the "second" IC TEA6821 is replaced  
by the successor TEA6822.  
Improvements of the TEA6822 with respect to the 6821:  
At AM.  
- Sensitivity higher. Distortion and AM and AF output less fieldstrength dependent  
At FM.  
- Interference Absorbtion improved by double detection.  
- Gain less temperature dependent  
- AM to FM switching in less then 0.5 seconds  
With respect to software control.  
- Level ADC extended from 3 to 4 bits.  
- Multipath sensitivity to be set.  
- Level temperature coefficient to be chosen (1 bit) for CDSP applications.  
- Counter pre-scaler setting added to reduce counter time.  
9
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
10  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
1
INTRODUCTION  
CCR612 is a computer controlled high-end AM/FM car radio system with R(B)DS (Radio Broadcasting  
Data System), EON (Enhanced Other Network information) and I2C-bus controlled radio IC’s. CCR612S  
is the controlling microprocessor. CD-changer control is also preformed by the CCR612S. It is based on  
the 8051 family microcontroller P83CE528 and takes care of all radio control functions as well as R(B)DS  
and EON decoding. With the following features:  
Digital PLL tuning for FM, MW, LW and SW (49m) bands, (factory options: MW, LW and SW disable).  
Factory option for application in different parts of the world (e.g. USA / Europe) concerning the band  
limits and tuning grid.  
Manual Tuning, Search Tuning and Local/Dx handling.  
Frequency Scan (Continuous Search, pausing 6 seconds on every station).  
Automatic Store Tuning (AST).  
Search for Traffic Programmes (TP) or specific Program Types (PTY).  
Presets: 6 in each of the bands: FM1, FM2, FM-AST, MW, MW-AST, LW and SW (49m).  
R(B)DS functions:  
- PS  
Programme Service name.  
- PI  
Programme Identification code.  
- AF  
Alternative Frequency List / Automatic Following.  
Traffic Programme / Traffic Announcement.  
Programme TYpe selection and display. PTY Code table for both RDS and RBDS.  
Enhanced Other Networks information.  
- TP / TA  
- PTY  
- EON  
Sound control: volume, bass, treble, balance, fader, loudness and mute via I2C-bus or potentiometers.  
Non Volatile Memory for last sound control settings, last band, last frequency for each band, Presets,  
PS names (RDS), AF lists (RDS), etc.  
LCD display (I2C bus controlled) displaying:  
- system status (band / frequency / preset number / modes).  
- RDS Programme Service name (PS).  
- RDS Programme Type (PTY).  
- Sound control settings (Bass, Treble, Balance, Fader).  
Power stabilizer control with diagnostic functions.  
User control up to 27 keys with either a fixed keyboard, a keyboard on a detachable front or a  
combination of both.  
User programmable options.  
Cassette Interface including MTL, Dolby, AMS (Automatic Music Search) and Solenoid control.  
Input jack for external audio source.  
Input for phone mute detection.  
An interface for the SCC600 CD-changer.  
11  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
1.1  
AF  
AMS  
AST  
EON  
I2C  
Definitions, Acronyms and Abbreviations  
Alternative Frequencies (R(B)DS-information) / Automatic Follow;  
Automatic Music Search;  
Automatic Store Tuning;  
Enhanced Other Network (R(B)DS-information);  
Inter-IC bus;  
ICE  
LCD  
MTL  
NVM  
PI  
In Car Entertainment;  
Liquid Crystal Display;  
Metal (versus Chrome/Ferro) type of tape;  
Non Volatile Memory (EEPROM);  
Programme Identification (R(B)DS-information);  
Programme Service name (R(B)DS-information);  
Programme TYpe (R(B)DS-information);  
Radio Data System;  
Radio Broadcast Data System;  
Traffic Announcement (R(B)DS-information);  
Traffic Programme (R(B)DS-information).  
PS  
PTY  
RDS  
RBDS  
TA  
TP  
AF follow  
mode  
Radio will always be tuned to the Alternative Frequency with the best signal quality.  
Traffic  
station  
A station of which the TP (this station) or TA (linked via EON) bit is set to indicate that  
traffic announcements will be transmitted via this station or linked EON stations.  
NOTE: RBDS is an extension of the European RDS system. Every reference in this document to RDS is  
also valid for the RBDS system unless, otherwise specified.  
1.2  
References  
[1] Outline specification of High-End RDS/EON Car Radio System (CCR612S)  
(version 0.2)  
AN96043  
PCALE, A. Demmers, M. Verheijden.  
[2] Specification of the radio data system RDS for VHF/FM sound broadcasting,  
European Standard CENELEC  
Ref.No. EN 50067  
[3] United States RBDS standard January 8, 1993  
Specification of the radio broadcast data system,  
NRSC  
[4] TEA6811/TEA6822 Car Radio Receiver (V 1.2)  
PCALE, W van Dooremolen.  
AN95074  
[5] Improved Dynamic Radio Reception with PACS (TEA6850).  
PCALE, H de Ruijter.  
AN95052  
12  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
2
2.1  
HARDWARE CONFIGURATION  
Block diagram CCR612  
Figure 1 shows the block diagram of the high-end computer controlled RDS car radio system CCR612.  
As can be seen in the block diagram, the system can either be equipped with a fixed keyboard or with a  
detachable keyboard. The detachable keyboard version of the system still allows some keys to be realised  
as fixed keyboard keys. Furthermore a choice exists with respect to the following system parts:  
- Power amplifier ( 2 speaker / 4 speaker / output power)  
- Sound control (Potentiometer control / I2C control)  
This hardware description only describes the use of the sofac TEA6320.  
2.1.1  
Main Board Part 1a (Basic AM/FM stereo Radio Part)  
Page 81 shows the circuit diagram of the basic radio part, which consist of the following parts: ICE receiver  
module, audio pre-amplifier, power amplifier, power stabiliser, differential line receiver and PACS control  
board.  
AM/FM - ICE module (TEA6811V,TEA6822T)  
The AM/FM - ICE module is a sub-board ( see paragraph 2.1.8)which comprises a two IC package (RF  
IC TEA6811V and IF IC TEA6822T) and is designed especially for use in car radio’s. The module contains  
the following functions;  
AM receiver  
FM receiver  
- FM stereo decoder  
- Interference Absorption Circuit (or Noise Blanker)  
- Station detector and weak signal control  
PLL tuning Synthesizer  
I2C-Bus control  
The complete circuit diagram of the ICE Module (version euro 1) is shown on page 89. For a detailed  
description of functions and performance see Ref.4.  
Audio Pre Amplifier (TEA6320)  
I2C-Buscontrolledaudiopre-amplifierinSOpackageforcarandhomereceivers, includesSourceselector  
(for four stereo inputs and one mono input), Loudness characteristic, Volume control, Bass control, Treble  
control, Balance and Fader control.  
Power Amplifier (TDA8561Q)  
Car radio power amplifier with dynamic distortion detector and diagnostics in a 17 lead single in line (SIL)  
plastic power package. It contains 4 x 12W (2 ohm) and 4 x 7W (4 ohm) single-ended or 2 x 24W (4 ohm)  
bridge amplifiers.  
Supply voltage Stabilizer (TDA3602)  
Three output voltage regulator, in SIL 9 package, for use in car radios with a microprocessor. It contains  
two computer controlled voltage regulators with foldback current protection (Regulators 1 and 2) and one  
fixed voltage regulator (3) that also operates during load dump and thermal shutdown. This regulator is  
used to supply the microprocessor.  
13  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
FM / AM  
AM/FM RECEIVER  
Stereo decoder  
CDC_L  
EX_L  
EX_R  
C D C  
INPUT  
JACK  
EXTERNAL  
AUDIO  
ISOLATOR  
TDA8579(T)  
ISOLATOR  
TDA8579(T)  
LF  
Audio Amplifier  
Power supply  
POWER  
AM P  
CDC_R  
JACK  
CDC_bus  
EX STATE  
L R  
MAIN BOARD PART 1  
TDA8562Q  
or  
AU DIO C ON TR OL  
TEA632xT  
O R  
TDA8561Q  
RF  
CASS(L)  
CASS(R)  
AM/FM-RF  
PLL-SYNTH  
TEA6811V  
AM/FM-IF  
MPX DEC.+IAC  
TEA6822T  
(2x)  
L
R
TD A1526  
MONO  
R R  
ICE MODULE  
DIAG.  
MAIN IIC-BUS  
MPX  
In-lock  
BLEEP  
IF  
MPX  
EE PR OM  
PCF8594E  
-2(P/T)  
VOLTAGE  
STABILIZER  
TDA3602  
R D S  
DEMODULA TOR  
SAA6579T  
PACS  
TEA6850  
MICROCONTROLLER  
CCR612S  
RDSCLK  
RDSDAT  
(P83CE528)  
SUB-BOARD  
MAIN uP ,NVM  
RDS DEMODULATOR  
MAIN BOARD PART 2  
5
CASSETTE  
CONTROL  
INTERFACE  
CASS(L)  
CASS(R)  
8
KEYBOARD SCAN LINES  
LCD DR IVER  
PC F85 76  
MECR  
DOLBY  
AMS  
CASSETTE INTERFACE  
MAIN BOARD PARTS  
HEAD AMPL DOLBY AMS PROC.  
TEA0675(T)  
or: TEA0677(T)(no dolby)  
DISPLAY PANEL  
L C D  
D ISPLAY  
FIXED KEYBOARD  
FRONT-PANEL FP1A/B  
OR  
KEYBOARD SCAN LINES / DETACH. KEYB IIC-BUS  
DISPLAY PANEL  
DETACHABLE KEYBOARD  
FRONT-PANEL FP1C  
DETACHABLE  
KEYBOARD  
SCAN NER  
PCF8574  
LCD DRIVER  
PCF8576  
LC D  
DISPLAY  
Figure 1 Block diagram CCR612  
14  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
Isolator ( Differential Line Receiver, TDA8579T)  
Dual common-mode rejection differential line receiver with 0 dB gain and low distortion. This device is  
intended to be used to receive line inputs in audio applications that require a high level of common-mode  
rejection. The device is encapsulated in an 8-pin SO or DIL package. In this set the isolator is used  
between the external input and source selector input. Both the external input plug circuit and the  
CD-changer input circuit are equipped with an isolator.  
PACS - Sub Board (TEA6850)  
PACS controls the I.F. Selectivity / Bandwidth to avoid receiving problems due to near adjacent channels  
(especially for Europe, spacing of 100 kHz is not an exception). In order to show the improvements of the  
selectivity and dynamic behaviour of the radio by the use of PACS an ON/OFF switch has been used on  
the front panel.  
A complete circuit diagram of the PACS board is shown on page 94 and for description of the functions,  
alignment and performance see Ref.5.  
2.1.2  
Main Board Part 1b (Optional Power Amplifier, 2 x TDA8561Q)  
Page 82 shows the previous circuit diagram (paragraph 2.1.1 Basic AM/FM stereo Radio Part) equipped  
with circuits for 4 x 24W (4 ohm) audio output power.  
Power Amplifier (2 x TDA8561Q)  
Single circuit configuration 2 x 24W (4 ohm) bridge amplifiers, package SIL 17 pins Quil.  
2.1.3  
Main Board Part 1c (Optional Source Sel. & Audio Contr.  
HEF4052B/TDA1526)  
Page 83 shows the circuit diagram from paragraph 2.1.1 (Basic AM/FM stereo Radio Part) equipped with  
the DC controlled audio pre-amplifier (TDA1526) and a source selector circuit (HEF4052B).This set-up  
is used in case potentiometer control for volume and tone is desired.  
Audio Pre-Amplifier and DC Control (TDA1526).  
An active stereo,tone/volume control for car radios. It includes functions for bass and treble, control,  
volume control with built in contour (can be switched off) and balance.All these functions can be controlled  
direct by DC voltages or via single linear potentiometers.  
Source selector circuit (HEF4052B).  
The HEF4052B is a dual 4 channel analogue multiplexer/demultiplexer with common channel select logic.  
In this case used for four stereo inputs: radio, cassette and external input.  
15  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
2.1.4  
Main Board Part 2a ( Micro-controller, EEPROM and RDS Demodulator)  
Page 84 shows the circuit diagram of the RDS Demodulator, Micro controller (which combines all radio  
control functions as well as RDS decoding) and EEPROM.  
Microcontroller (P83CE528EFB)  
Main microcontroller (CCR612S), a derivative of the 8051 micro-controller family with an 8-bit CPU, 32  
Kbytes ROM, 512 bytes RAM and four 8-bits I/O ports in a 44-pins QFP package.  
EEPROM (PCF8594E-2P/T)  
The PCF8594E is a 512 byte, 5V Electrically Erasable Programmable Read Only Memory (EEPROM) that  
can be 100,000 times re-written. I2C-bus controlled.  
RDS Demodulator (SAA6579T)  
RDS Demodulator IC, which includes the 57 kHz band-pass-filter, to generate the RDS data out of the  
MPX signal.  
2.1.5  
Main Board Part 2b (Detachable Front)  
Page 85 shows the previous circuit diagram (paragraph 2.1.4) of the micro controller board extended with  
the possibility to use a detachable front panel.  
2.1.6  
Main Board Part 3 (Cassette Interface including Dolby B*)  
Page 86 shows the circuit diagram of the cassette interface circuit for the Philips cassette deck P6-29/3.  
The circuit is based on the TEA0675, Dual Dolby* B-type noise reduction circuit for playback applications.  
The TEA0675 includes head and equalization amplifiers with electronically switchable time constants.  
Furthermore the TEA0675 includes electronically switchable inputs for tape drives with reverse heads.  
This device also detects pauses of music in the AMS (Automatic Music Search) scan mode.  
16  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
2.1.7  
Front Panels  
2.1.7.1  
Front Panel Part FP-1a (Key and Display panel)  
Page 87 shows the circuit diagram of the key and display panel.  
LCD Driver (PCT8576CT)  
The PCF8576 is a peripheral device which interfaces to almost any liquid crystal display (LCD) having low  
multiplex rates. It generates the drive signals for any static or multiplex LCD containing up to four back  
planes and up to 40/24 segments and can easily be cascaded for larger LCD applications. I2C-bus  
controlled.  
2.1.7.2  
Front Panel Part FP-1b (Detachable Front Version).  
Page 88 shows the circuit diagram of the detachable keyboard front. The circuit includes an I/O expander  
PCF8574, the keyboard and LCD display unit are placed on the detachable front controlled by a second  
I2C bus. Eight contacts are required to connect the detachable front to the radio. Furthermore there is a  
fixed key-board with a limited number of keys included. That means it is possible to use a combination of  
detachable keys and fixed keys (for circuit example see page 85).  
2.1.8  
Diagram ICE module.  
Standard Version EURO 1  
Page 89 shows the complete circuit diagram of the ICE AM/FM tuner module version Euro 1.  
The Standard Euro 1 module is intended for European frequency ranges.  
FM  
87.5  
to  
to  
to  
108.0 MHz  
1629 kHz  
288 kHz  
AM (MW) 531  
AM (LW) 144  
The module contains the IC’s TEA6811V and TEA6822T with the following main functions;  
TEA6811 - AM RF  
- AM mixer  
TEA6822  
- 2nd AM mixer  
- 2nd FM mixer  
- FM mixer  
- AM/FM oscillator  
- Tuning synthesizer  
- I2C-Bus  
- AM/FM - IF amplifier  
- AM and FM demodulator  
- x-tal oscillator (61.5 MHz)  
- Stereo Decoder and IAC  
- Station (stop) detector  
- Weak signal processing  
- Multi Path Detector  
- I2C-Bus  
17  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
EURO 2, USA 1 and JAPAN 1 ICE MODULE VERSIONS.  
By slight circuit modifications of the standard module (EURO 1), matched module versions with better  
performance for e.g. USA an Japan can be derived. The needed modifications for the different modules  
are:  
Module Version  
Euro 1  
Modifications.  
Non  
Euro 2 (including S.W.)  
USA 1  
A short wave transformer i.s.o. L8 and C29  
L15 short circuited  
C2 10pF i.s.o. 5p6  
C72 6p8 deleted  
R18 1 Mohm i.s.o. 220 Kohm  
R54, in parallel with C26 (1uF)  
C61 10 nF i.s.o. 6n8  
C62 10 nF i.s.o. 6n8  
Z1 SFR450H i.s.o. SFP 450H  
Z3 SFE 10.7 MS3 G-A 220 kHz i.s.o. SFE10.7 MS3 A 10k-A  
Z2 & Z4 SFE 10.7 MS2 G-A 180 kHz i.s.o. SFE10.7 MS3 A 10k-A  
R41 (pre-set adjust) replaced by resistor of 68 Kohm.  
R44 120 Kohm i.s.o. 82 Kohm.  
Japan 1  
C7 47 pF i.s.o. 180pF  
C9 deleted  
D3 BB814 selection i.s.o. BB804  
2.1.9  
Diagram PACS Sub Board  
Page 94 shows the diagram of the PACS Sub-Board using the TEA6850. For circuit description,  
performance and PCB lay out see application note Ref.5.  
2.1.10  
PCB LAY-OUTS of CCR612 sample Version D.  
CCR612/Mainboard PCB lay-out TOP side Copper (p. 90, fig. a) / Components (non SMD) (p. 90, fig. b)  
CCR612/Mainboard PCB lay-out BOTTOM side Copper(p. 91, fig. c) / SMD Components (p. 91, fig.d)  
ICE module board PCB lay-out TOP side Copper(p. 92, fig. a) /Components (non SMD) (p. 92, fig. b)  
ICE module board PCB lay-out Bottom side Copper(p. 92, fig. c) / SMD Components (p. 92, fig. d)  
Front panel PCB lay-out Top side Copper (p. 93, fig. a) / Components (non SMD) (p. 93, fig. b)  
Front panel PCB lay-out Bottom side Copper (p. 93, fig. c) / SMD Components (p. 93, fig. d).  
18  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
2.2  
Performance of the radio  
General  
Supply voltage range  
Quiescent current:  
10.2  
-30  
to  
to  
16  
< 2  
V
power off  
power on  
mA (typ.)  
mA (typ.)  
550  
Operating ambient temperature  
FM frequency range:  
80  
°C  
Europe  
USA  
87.5  
87.9  
to  
to  
108.0  
107.9  
MHz  
MHz  
AM frequency range:  
Europe  
USA  
144  
531  
5900 to  
530 to  
5900 to  
to  
to  
288  
kHz (LW)  
kHz (MW)  
kHz (SW)  
kHz (MW)  
kHz (SW)  
1629  
6200  
1710  
6200  
IF-frequency double conversion: FM-IF1/IF2  
AM-IF1/IF2  
72.2 MHz / 10.7 MHz  
10.7 MHz / 450 kHz  
19  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
FM characteristics  
Vsupply = 14.4 V, Tamb = 25 °C, fo = 98 MHz, fdev = ±22.5 kHz, fmod = 1 kHz unless otherwise specified. Dummy  
aerial as shown in Figure 2.  
4.3  
120  
Radio aerial  
5 0  
input (150 Ohm)  
55  
Vin  
Signal generator  
Figure 2 Dummy aerial to test the FM mode  
Aerial input voltage (Vin), for -3 dB limiting (adjustable)  
for (S+N)/N = 26 dB  
3 - 20 µV  
2.7 µV  
for 10 dB crosstalk (stereo)  
70 µV  
Signal-to-noise ratio over most of the signal range  
64 dB  
RF signal handling capability for THD < 2% at 75kHz dev.  
> 2  
V
MPX output (RMS value) at pin 47 of the TEA6822  
AM suppression over most of the signal range  
200 mV  
> 55 dB  
Total Harmonic Distortion over most of the signal range. 75 kHz dev. 0.5 % (typ.)  
Adjacent signal selectivity (two signal method) S200  
> 45 dB  
> 70 dB  
> 90 dB  
IF suppression:  
IF1 (72.2 MHz)  
IF2 (10.7 MHz)  
Search sensitivity (adjustable)  
Vin > 4  
µV  
Vin > 12 µV  
Vin > 15 µV  
6.25 kHz  
RDS sensitivity:  
Traffic Announcement  
Programme Identification  
IF counter resolution  
Frequency grid (Europe): Search Tuning  
Manual Tuning  
100 kHz  
50 kHz  
Repetitive Manual tuning (after .5s)  
Search Tuning  
100 kHz  
200 kHz  
Frequency grid (USA):  
Manual Tuning  
100 kHz  
Repetitive Manual tuning (after .5s)  
200 kHz  
20  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
AM characteristics  
Vsupply = 14.4 V, Tamb = 25 °C, fo = 999 kHz, m = 0.3, fmod = 1 kHz unless otherwise specified. Dummy aerial  
as shown in Figure 3.  
6 0  
15 pF  
Radio aerial input  
50  
65 pF  
50  
Vin  
Signal generator  
Figure 3 Dummy aerial to test the AM mode  
Aerial input voltage (Vin),  
for (S+N)/N = 26 dB MW  
55  
80  
t.b.f.  
µV  
µV  
LW  
SW  
Signal-to-noise ratio for Vin = 1 mV  
> 55 dB  
> 60 dB  
AGC range 5 mV/Vin for 10 dB variation of AF output  
RF signal handling capability for THD < 10 % at m = 0.8  
> 3  
V
Total Harmonic Distortion over most of the  
AGC range, m = 0.8, fmod = 1 kHz  
< 2  
4.5  
%
Total bandwidth B 3dB  
Fidelity ( -3 dB )  
kHz  
10 Hz - 2 kHz  
IF suppression IF1 (10.7 MHz)  
IF2 (450 KHz)  
> 70 dB  
> 100 dB  
IF selectivity  
S9  
S18  
> 55 dB  
> 60 dB  
250 Hz  
IF counter resolution  
21  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
Frequency grid  
Europe  
LW (search and manual tuning)  
MW (search and manual tuning)  
SW (search and manual tuning)  
1
9
1
kHz  
kHz  
kHz  
USA  
MW (search and manual tuning)  
SW (search and manual tuning)  
10 kHz  
kHz  
1
Search sensitivity (adjustable)  
> 20 µV  
22  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
3
SHORT SPECIFICATION  
Tuning  
Frequency bands:  
Optionally the following frequency bands are used:  
FM: 87.50 - 108.00 MHz (50 / 100 kHz steps)  
}
MW: 531  
LW: 144  
SW: 5.9  
- 1629 kHz (9 kHz steps)  
} For application in Europe  
}
}
- 288  
- 6.2  
kHz (1 kHz steps)  
MHz (1 kHz steps)  
FM: 87.90 - 107.90 MHz (100 / 200 kHz steps)  
}
MW: 530  
SW: 5.9  
- 1710 kHz (10 kHz steps)  
- 6.2 MHz (1 kHz steps)  
} For application in USA  
}
PLL tuning principle  
Manual tuning up / down  
First one step, next after 0.5 seconds. Fast repetition at 12.5 times per second.  
Local/Dx switching  
The Local/Dx feature controls the search sensitivity. Default after switching on is always Dx.  
In the TEA6811 a tuner attenuator for the FM-band is incorporated.  
Search tuning up / down  
Sensitivity is controlled by Local/Dx. If after one complete band sweep in Local mode no station is  
found, the radio switches automatically to Dx. During search tuning the running frequency is displayed  
and the radio is muted.  
Frequency Scan  
Continuous automatic search tuning, pausing for 6 seconds on every station.  
AST (Automatic Store Tuning) for FM and MW band  
AST switches to FM-AST or MW-AST band, searches for the 6 strongest transmitters in the band and  
stores them in the AST programme preset memory. In FM, duplication of PI codes will be avoided.  
Programme preset memory  
For each band (FM1, FM2, MW, LW, SW (49m), FM-AST and MW-AST) 6 programme presets and a  
"manual" frequency are stored. In FM, additional RDS information is stored: PI code (Programme  
Identification), PS name (Programme Service), AF list (Alternative Frequencies) and AF follow mode  
on/off.  
Whenever another band is selected, the radio reverts to the last frequency tuned to in the new band  
(this can be either a preset frequency or a manually tuned frequency).  
Programme preset up / down control  
Programme presets can be stored and recalled by two key control (up and down) or by 6 separate  
preset keys.  
23  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
AF follow mode  
When AF follow mode is on, the set will regularly measure the signal strength of alternative frequencies  
and compare it with the current station. If an alternative frequency offers better quality, the radio will  
switch over and update the alternative frequency list. The measuring scheme is designed to cause  
minimum noticeable disturbance for the listener. The interval time between two measurements depends  
on the signal quality.  
Intelligent preset programme recall  
If an FM programme preset with a known PI code is recalled, the primary frequency and all alternative  
frequencies stored in the programme preset memory are examined. The frequency with the best signal  
quality broadcasting the correct PI code will be selected. Only when the programme is not found on one  
of the AFs, after 6 seconds a search is started for a station with a proper PI code.  
TA mode  
In TA mode the radio only searches for transmitters that transmit the RDS traffic programme on the  
same station or on EON linked stations. The radio will automatically start a search when switching TA  
mode on and the current station is not a traffic station.  
PTY scan mode  
In PTY scan mode the radio searches for transmitters that transmit the user-selected PTY code.  
Dependent on the factory option USA/Europe the RBDS PTY-table or the RDS PTY-table is used. Only  
English PTY messages are available.  
Last status memory: band, frequency, PI code, AF follow mode on/off status and TA mode on/off status  
are stored in memory. This status is recalled during switch on.  
RDS  
Bit, block and group synchronisation. (inclusive RBDS E-block detection).  
Data collection and decoding of:  
- PI,  
Programme Identification code  
Alternative Frequencies  
Traffic Programme  
Traffic Announcement  
Programme Service name  
Programme TYpe  
- AF,  
- TP,  
- TA,  
- PS,  
- PTY,  
- EON, Enhanced Other Network  
AF follow mode using PI and AF (see also Tuning).  
Display of the programme service name in 8 alpha-numeric characters (PS name).  
Display of AF, TP, TA, PTY, EON and Regional mode status via icons.  
Regional mode on/off switching. When Regional mode is on, the radio will, during AF switching, only  
switch over to stations with exactly the same PI-code. When Regional mode is off, the radio will also  
24  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
switch over to stations broadcasting regional variants of the original station. (so called "generic" or  
"family" PI codes). For USA application (RBDS) the regional function will only work for PI codes above  
B000hex. PI codes below B000hex do not have regional variants. Af switching is only allowed to stations  
with exactly the same PI code.  
Break-in of traffic announcements is possible if the TA option is switched on. The PTY alarm messages  
break-in always. Break in is possible even when the radio is muted or in CD-changer / cassette /  
external mode.  
User Control  
Up to 27 Local control keys on either a fixed, a detachable keyboard or a combination. Triangular matrix  
using 7 lines.  
Detachable front  
Optionally, the keyboard and the LCD display unit can be placed on a detachable front controlled by  
a 2nd I2C bus. Only 5 contacts are required to connect the detachable front (6 if it hosts also the power  
key). No extra hardware is required to detect its presence.  
EON  
If the TA option is on, switch temporarily to an other station if EON information indicates a traffic  
announcement on another network even when the radio is muted or in CD-changer / cassette / external  
mode.  
Maintain lists of alternative frequencies of other stations stored in preset memory with information  
received via EON on the currently tuned station.  
Display by means of an icon whether EON data is received and whether an EON traffic announcement  
is broadcast.  
Display  
143 Segment LCD with Umlaut (ü) characters, 1:4 multiplexed divided into:  
8 Alphanumeric characters + decimal point are used to display:  
- Band and frequency (Example: "FM 103.50")  
- Indication "BALANCE", "FADER", "TREBLE", "BASS" and their value.  
- RDS programme service name (PS) in 8 alphanumeric characters.  
- RDS programme type (PTY)  
- "MUTE", in case the user mutes the radio, cassette or external  
- Cassette mode function such as "PLAY >", "CAS WIND", etc.  
- CD-changer messages such as "CD 01.23" , "CHANGER " etc.  
7 Segment display for the current programme preset number.  
25  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
15 Icons for display of:  
- ST  
On when stereo pilot signal is detected and the radio is not in forced mono mode.  
On when AST band is selected.  
On when in Frequency scan mode.  
On when AF follow mode is enabled (see also Tuning), flashing if no RDS data  
received.  
- AST  
- SCAN  
- AF  
- TA  
- TP  
On in TA mode and flashing during a traffic announcement in progress.  
On when a traffic station is received, flashing when the station is not a traffic station  
and TA mode is on.  
- PTY  
On when a PTY code is received, flashing during PTY search.  
On in cassette mode when dolby is on.  
On in cassette mode when metal/chrome is selected.  
On in cassette mode when AMS is on.  
On when the radio is in regional mode (see also RDS)  
On when EON data is received, flashing during an EON traffic announcement.  
On when the radio is in Local mode (see also Tuning)  
On when Loudness is on.  
- DOLBY  
- MTL  
- AMS  
- REG  
- EON  
- LOC  
- LOUD  
- CLIP  
On when clipping is detected and clipping control is active.  
Non Volatile Memory  
512 bytes EEPROM. The following information is stored in NVM:  
System status e.g.: band, audio source (radio / CD-changer / cassette / external).  
For each band FM1, FM2, FM-AST, MW, MW-AST, LW, SW(49m) : 6 preset frequencies, one non-  
preset frequency and the last used preset number.  
For each FM preset:  
- PI-code  
- PS Name  
- AF List (9 AF’s)  
- AF follow mode on/off.  
Audio controls: volume, bass, treble, balance, fader and loudness.  
Preprogramming EEPROM  
At power-on the contents of the NVM is checked, when a non-initialized EEPROM is detected, the  
EEPROM will be preprogrammed with default values.  
Appendix II lists the default values written to NVM during initialization.  
Sound  
Volume, bass, treble, balance and fader control with VOL-UP / VOL-DOWN keys.  
Analog control select key to cycle through bass, treble, balance and fader.  
Mute function.  
Automatic muting during tuning and AST search (silent tuning).  
Break-in of traffic announcements and PTY-alarm messages (at increased volume level, which is user  
programmable) when the radio is muted or in cassette / external mode.  
Loudness function.  
26  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
Sound settings are stored at switch-off and recalled at switch-on.  
"Bleep" tone to confirm user actions such as storing a programme preset, entering AST mode, etc.  
Mono / stereo function.  
Output pins for mute, loudness and traffic announcement, for use with conventional audio control  
circuitry.  
Automatic mute of radio during "Phone mute" detection.  
Power-amplifier  
Power-amplifiers with diagnostic facilities  
* 1 ×TDA8561Q amplifier for 4 × 12 W ( 2load) or 4 × 7 W or 2 × 24 W bridged application. (both at  
4load)  
* 1 ×TDA8562Q amplifier for 4 × 12 W ( 2load) or 4 × 7 W (4load)  
* 2 ×TDA8561Q amplifier for 4 × 24 W bridged application. (4load)  
Diagnostic control:  
* short-circuit or too high temperature detection, display an error message  
* signal clipping, via an icon and stepwise decrease of bass and or volume  
Optional conventional power-amplifiers (without diagnostics) can be used such as two TDA1552Q for  
4 × 22 W, one TDA1554Q for 4 × 11 W (2load) or 4 × 6 W (4load) or one TDA1552Q 2 × 22 W in  
a BTL stereo configuration.  
Options  
Diode programmable  
- Detachable front  
- Available frequency bands  
- Static on/off switch  
- Frequency band limits and tuning grid for different parts of the world. This option also selects  
between RDS (Europe) and RBDS (USA).  
User programmable  
- 2 / 4 Loudspeakers  
- Loudness on / off  
- TA volume level  
Automatically detected  
- Digital sound control chip or conventional audio control circuitry  
- Loudness  
- AMS  
- Dolby  
- MTL  
}
} Cassette deck functions  
}
- Presence of the CD-changer (check during power-on)  
- Availability of a power amplifier with diagnostics facilities  
27  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
Power connections  
Continuous power supply input. Normally connected directly to the car battery. All supply power is  
drawn from this supply.  
Ignition key input. Normally connected to the accessory contact of the ignition switch. Used only for  
switching the radio on/off. This input is also used when the static on/off switch option is chosen instead  
of the momentary on/off key.  
Switching on/off  
Recall of last system status (e.g.: frequency, band, sound control settings, RDS status and last selected  
audio source).  
Switch on by:  
- Power key, can be static or momentary.  
- Ignition contact (after the set was switched off by turning the ignition contact off).  
Switch off by:  
- Power key, can be static or momentary.  
- Ignition contact.  
- Removal of detachable keyboard.  
When switched on while the ignition contact is (and remains) off, the set will automatically switch off  
after 60 minutes.  
The radio will switch on again when switched off due to a power dip during engine start.  
CD-changer  
Radio/CD-changer/Cassette/External mode key.  
Disc up/down keys for selecting the next/previous disc.  
Track up/down keys for selecting the next/previous track.  
Fast forward/reverse keys for jumping some grooves forward/backward.  
Shuffle on/off key, for playing the tracks in random order. (The user can make a selection between  
tracks on the current disc only or tracks on all discs.)  
Repeat on/off key, for repetitive play of the current track or the current disc.  
Intro-scan key. When Intro-scan mode is on, each track of the current disc or the first track of every disc  
(user selectable) are played for 10 seconds in successive order.  
28  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
Cassette  
Automatically switches to cassette mode after insertion of a tape  
Interfaces with a mechanically controlled cassette deck  
Play/wind mode detection  
Play direction detection for auto-reverse cassette decks  
Cassette solenoid control  
AMS pause detection for full AMS control  
Radio sound during cassette winding  
MTL on/off key  
DOLBY on/off key  
AMS on/off key  
CD-changer/Cassette/Radio/External mode key  
Optional source switching to external mode (external plug is in) or always to radio mode (option diode  
D6 is present) when the tape is ejected.  
External audio input:  
Automatically switches to external audio source when a connector is inserted.  
CD-changer/External/radio/Cassette mode key.  
Optional source switching to cassette mode (tape is in) or always to radio mode (option diode D6 is  
present) when the external plug is removed.  
29  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
4
CCR612S PINNING AND INTERFACING  
CCR612S is accommodated in a P83CE528 microcontroller in a 44-pins Quad Flat Package. It is  
manufactured in CMOS technology and is a derivative of the 80C51 microcontroller family. It contains 32  
kbytes of ROM and 512 bytes of RAM.  
For electrical characteristics of I/O pins, see the P83CE528 data sheet.  
4.1  
Pinning overview  
When the radio is equipped with a detachable keyboard, pins KEYB5_FSDA & KEYB6_FSCL (pins 23 &  
24) are used as I2C-bus lines to the detachable keyboard. Otherwise pin 23 and pin 24 are used as scan  
lines for the fixed keyboard.  
1
2
3
4
5
6
7
8
33  
32  
31  
30  
29  
28  
27  
26  
25  
24  
23  
EXS TAT  
S C L  
SD A  
RESET  
CM TL  
P1.5  
P1.6  
P1.7  
RST  
P3.0  
Vs s  
P3.1  
P3.2  
P3.3  
P3.4  
P3.5  
P0.4  
P0.5  
P0.6  
P0.7  
EA  
Vs s  
ALE  
PSEN  
P2.7  
P2.6  
P2.5  
D I A G  
SEL1_PAUSE  
T A  
O N  
EA  
Vss  
ALE  
PSEN  
HO LD  
CCR612S  
(P83CE528)  
Vss  
CAM S  
RDSCLK  
CDC_ bus  
BLPTST  
CDOLBY  
9
10  
11  
KEYB6_FSCL  
KEYB5 _FSDA  
Figure 4 Pinning of CCR612S  
In case of conventional audio sound control circuitry, pin SEL0_SOLND and SEL1_PAUSE are used to  
select between the various audio sources (radio, CD-changer, cassette, external output) by means of a  
dual 4 channel analogue multiplexer (e.g. HEF4052B). If a TEA632x is installed these pins can be used  
for respectively solenoid control and AMS pause input control.  
30  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
The next tables give a description of the function of all pins.  
Legend for pin types: OD Open Drain  
IP Internal Pull up resistor  
1
2
Can sink 1 TTL load (or 4 LSTTL)  
Can sink 2 TTL loads (or 8 LSTTL)  
Pinning CCR612S  
Pin Name  
I/O  
I
Type  
IP 1  
Description  
1
EXSTAT  
Indicates whether external audio source is connected.  
High: external audio source is not connected  
Low: external audio source is connected  
2
3
4
SCL  
I/O  
I/O  
I
OD 2  
OD 2  
Clock line of I2C bus  
Data line of I2C bus  
SDA  
RESET  
Normally low. To start the microcontroller, a high pulse of  
at least 20 milliseconds must be applied to this pin.  
A reset pulse must be applied when:  
- Power is applied to the radio  
- The power key is pressed while the radio is off  
- The ignition contact is switched on while the radio is off  
The reset input is normally connected to the reset and hold  
outputs of the power stabiliser TDA3602, via a capacitor  
and a diode.  
5
CMTL  
O
IP 1  
Cassette Metal (versus Chrome/Ferro) mode  
High: Ferro/Chrome selected  
Low: Metal selected  
I
If the cassette deck does not have this function, the pin  
must be connected to Vdd.  
6
7
Vss  
Ground  
CAMS  
O
IP 1  
Automatic Music Search  
High: AMS is active  
Low: AMS is inactive  
I
If the cassette deck does not have this function, the pin  
must be connected to ground.  
31  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
Pinning CCR612S  
Pin Name  
I/O  
I
Type  
IP 1  
Description  
8
RDSCLK  
RDS Clock line. Connected to clock output pin of RDS  
demodulator SAA6579  
9
CDC_bus  
BLPTST  
I
IP 1  
IP 1  
CD-changer bus. The CDC_bus is a bi-directional bus  
which allows the CD-changer and the radio to exchange  
commands and status information.  
10  
O
I
1. Bleep tone output signal. Normally high. This pin  
outputs the bleep tones.  
2. When pulled low externally, service mode is entered.  
The microcontroller stops all I2C bus transfers after  
completion of the last user action (within 0.5 sec.  
except for search tuning). This feature can be used for  
factory testing and programming the NVM before the  
radio leaves the factory.  
11  
CDOLBY  
RDSDAT  
O
IP 1  
Cassette Dolby mode  
High: Dolby not selected  
Low: Dolby selected  
I
If the cassette deck does not have this function, the pin  
must be connected to Vdd.  
12  
13  
I
IP 1  
IP 1  
RDS Data line. Connected to data output pin of RDS  
demodulator SAA6579.  
SEL0_  
SOLENOID  
O
SEL0 (no TEA632x installed). Source selection  
Sel1 Sel0  
0
0
1
1
0 CD-changer source selected  
1 Cassette source selected  
0 External source selected  
1 Radio source selected  
O
I
SOLENOID (TEA632x installed). Cassette solenoid  
High: Solenoid in standby position  
Low: Solenoid is locked  
If the cassette deck does not have this function, the pin  
must be connected to ground.  
14  
15  
XTAL2  
XTAL1  
O
I
A 12 MHz crystal is connected between these pins,  
controlling the internal clock oscillator. When an external  
clock is used, it must be applied to XTAL1.  
16  
17  
Vss  
Vdd  
Ground  
Power supply: + 5V  
18-  
24  
IP 1  
Keyboard scan lines. Pin assignments are different for  
fixed front and detachable front. See relevant tables at the  
end of this section.  
32  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
Pinning CCR612S  
Pin Name  
I/O  
I
Type  
IP 1  
Description  
25  
HOLD  
Connected to the hold output pin of the voltage stabilizer  
TDA3602. This pin is used to check for power failures.  
26  
/PSEN  
O
O
Program Store Enable output, used when the  
microcontroller runs code from an external memory. Not  
used by the CCR612S system. The pin will always be high.  
27  
ALE  
Address Latch Enable output, used when the  
microcontroller accesses external memory. Not used by  
the CCR612S system. This pin should not be connected.  
In the EMC improved microprocessors (P83CE528) this  
pin is muted.  
28  
29  
Vss  
/EA  
Ground  
I
External Access input. Should be held high (with a pull-up  
resistor) to ensure that the microcontroller runs from  
internal program memory (ROM).  
30  
ON  
O
OD 2  
OD 2  
Controls the voltage stabiliser TDA3602  
High: Switch supply voltages off (TDA3602 in "coma"  
state)  
Low: Switch supply voltages on (TDA3602 in "on"  
state)  
31  
TA  
O
Traffic Announcement indication  
High: No traffic announcement  
Low: Traffic announcement or PTY alarm message in  
progress  
This pin can be used to raise the volume setting during  
traffic announcements and PTY alarm messages in case  
no digital sound control IC is used.  
I
Option diode for static on/off switch detection.  
33  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
Pinning CCR612S  
Pin Name  
I/O  
O
Type  
OD 2  
Description  
32  
SEL1_  
SEL1 (no TEA632x installed). Source selection  
Sel1 Sel0  
PAUSE  
0
0
1
1
0 CD-changer source selected  
1 Cassette source selected  
0 External source selected  
1 Radio source selected  
I
I
PAUSE (TEA632x installed). Cassette AMS pause  
High: No pause detected  
Low: Pause detected  
If the cassette deck does not have this function, the pin  
must be connected to ground.  
33  
DIAG  
OD 2  
Power amplifiers diagnostics input.  
High: Normal mode  
Low: Clipping, overheated or shortcircuit.  
I
I
If no diagnostics facilities are available this pin should be  
connect to Vdd.  
34  
35  
36  
CDIR  
CINDRV  
IGN  
OD 2  
OD 2  
OD 2  
Indicates the play direction of the cassette deck. Used to  
show the play direction on the display  
High: Reverse ( <- arrow displayed)  
Low: Forward ( -> arrow displayed)  
I
I
Indicates whether a tape is in the cassette drive. Used to  
switch to cassette mode when a tape is inserted.  
High: No tape in drive  
Low: Tape in drive  
Indicates status of ignition contact or the static on/off  
switch (when this option is chosen). Used to switch the set  
on or off.  
High: Ignition contact / static switch on  
Low: Ignition contact / static switch off  
37  
38  
CPLYWD  
I
OD 2  
Indicates play/wind status of cassette deck. Used to switch  
to radio reception during winding.  
High: Wind  
Low: Play  
Vdd  
Power supply: + 5V  
34  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
Pinning CCR612S  
Pin Name  
I/O  
O
Type  
IP 1  
Description  
Ground  
39  
40  
Vss  
OPTROW  
Connected to the cathodes of all option diodes. During  
switch on, this pin is pulled low by the microcontroller to  
find out which option diodes are present.  
41  
42  
PLL_LOCK  
LOUD  
I
IP 1  
IP 1  
PLL In Lock detection.  
High: Tuner is in lock.  
Low: Tuner is not in lock.  
O
Loudness control. This pin can be used to switch loudness  
on/off in case no digital sound control IC is used.  
High: Loudness off  
Low: Loudness on  
loudness control is not available when this pin is  
connected to ground.  
I
43  
AUMUTE  
O
IP 1  
General mute control. This pin can be used to control  
general audio muting in case no sound control IC is used.  
High: Not muted  
Low: Muted  
Phone mute input  
I
High:  
Low:  
No phone mute request  
Phone mute request  
Option diode available bands 1  
I
44  
CENABL  
O
IP 1  
Cassette Enable. Controls the cassette deck motor.  
High: Cassette motor off  
Low: Cassette motor on  
I
Option diode for detachable keyboard detection.  
35  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
Pins 18 to 24 of CCR612 with fixed front.  
Pin  
18  
19  
20  
Name  
I/O  
I/O  
I/O  
Type  
IP 1  
IP 1  
IP 1  
Description  
KEYB0  
KEYB1  
KEYB2  
Line of the triangular keyboard matrix  
Line of the triangular keyboard matrix  
Line of the triangular keyboard matrix  
Option diode for tuning grid and band limits (USA / Europe  
option)  
I/O  
I
21  
KEYB3  
I/O  
I
IP 1  
Line of the triangular keyboard matrix  
Option diode for available bands.  
22  
23  
24  
KEYB4  
KEYB5  
KEYB6  
I/O  
I/O  
I/O  
IP 1  
IP 1  
IP 1  
Line of the triangular keyboard matrix  
Line of the triangular keyboard matrix  
Line of the triangular keyboard matrix  
The fixed keyboard (See Figure 6) is scanned every 10 milliseconds. To scan the keyboard, the lines are  
made low - one at a time - and then the state of the other lines are read. For debouncing, a keypress must  
be detected 3 times before it is accepted.  
36  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
Pins 18-24 of CCR612 with detachable front  
Pin  
18  
19  
20  
Name  
I/O  
I/O  
I/O  
Type  
IP 1  
IP 1  
IP 1  
Description  
KEYB0  
KEYB1  
KEYB2  
Line of the triangular keyboard matrix  
Line of the triangular keyboard matrix  
Line of the triangular keyboard matrix  
Option diode for tuning grid and band limits (USA / Europe  
option)  
I/O  
I
21  
22  
KEYB3  
KEYB4  
I/O  
I
IP 1  
IP 1  
Line of the triangular keyboard matrix  
Option diode for available bands.  
I/O  
Line of the triangular keyboard matrix  
These lines form a small extra triangular keyboard matrix.  
(See Figure 7). This keyboard is scanned every 10  
milliseconds. To scan the keyboard, the lines are made  
low - one at a time - and then the state of the other lines  
are read. For debouncing, a keypress must be detected 3  
times before it is accepted.  
This keyboard can be used optional together with the  
detachable keyboard.  
The power key should always be available in this  
keyboard but not when the static on/off switch option is  
used.  
23  
SDA_  
I/O  
IP 1  
Data line of front panel I2C bus.  
FRONT  
The detachable front has a separate I2C bus, for which  
measures may be taken to reduce interference and to  
improve immunity for static charges. It also isolates radio  
circuitry from the externally accessible contacts.  
The front panel I2C bus controls the display driver and the  
8-bit bi-directional I/O expander to which the keyboard  
matrix is detected.  
24  
SCL_  
I/O  
IP 1  
Clock line of front panel I2C bus.  
FRONT  
37  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
4.2  
Factory options  
4.2.1  
Diode options  
The following options can be selected by means of option diodes:  
Diode  
D1  
Pin  
44  
Description  
Detachable keyboard is available. (diode present)  
D2/D3  
21/43 Diode D2  
Not present  
Present  
Diode D3  
Not Present  
Not Present  
Present  
Available bands  
FM, MW, LW  
FM  
Not present  
Present  
FM, MW  
FM, MW, LW, SW(49m)  
Present  
D4  
D5  
D6  
D7  
No used in CCR612S  
31  
20  
Static on/off switch. (diode present)  
Not used in CCR612S  
Tuning grid and band limits for USA application are selected (diode present).  
LW band is disabled and the RBDS PTY code table is selected.  
D3  
D1  
D5  
D 2  
D 7  
1
2
3
4
5
6
7
8
3 3  
3 2  
3 1 T A  
3 0  
2 9  
2 8  
2 7  
2 6  
2 5  
2 4  
P1.5  
P1.6  
P1.7  
RST  
P3.0  
Vss  
P3.1  
P3.2  
P3.3  
P3.4  
P3.5  
P0.4  
P0.5  
P0.6  
P0.7  
E A  
CCR612S  
(P83CE528)  
Vss  
AL E  
PSEN  
P2.7  
P2.6  
P2.5  
9
1 0  
1 1  
2 3  
Figure 5 Connection of Option Diodes  
38  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
4.2.2  
Automatically detected options  
CCR612S will detect the following options automatically:  
Digital sound control chip.  
Presence / absence of a sound control chip (TEA632x) is detected by testing its I2C bus address.  
NOTE: The output pins AUMUTE, LOUDN and TA are always operational, even when a digital sound  
control chip is installed. Cassette solenoid and AMS pause control functions are not available in case  
no TEA632x is installed.  
AMS  
DOLBY  
MTL  
LOUDNESS  
DIAGNOSTICS  
}
}
}
}
}
These functions are not available if the corresponding  
output pin is connected to Vdd except for pins CAMS  
and LOUD which must be connected to ground.  
Presence of the CD-changer (check during power-on)  
4.3  
I2C bus addresses  
CCR612 I2C bus peripherals will be accessed at the following addresses:  
C4 h PLL synthesizer TEA6811V  
C2 h IF system TEA6822T  
80 h Sound control circuit TEA632x  
A0 h NVM PCF8594  
(The PCF8594 responds automatically to address A2 h for access to its upper half);  
40 h I/O expander PCF8574  
70 h Display driver PCF8576  
4.4  
The keyboard  
Two different configurations are possible:  
1.  
2.  
A fixed keyboard, directly connected to the microcontroller.  
A detachable keyboard, using an I/O expander to connect to the microcontroller via a dedicated  
I2C bus. A fixed keyboard with a limited number of keys still remains possible.  
39  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
4.4.1  
Fixed keyboard  
The fixed keyboard is scanned every 10 milliseconds. For debouncing, the same situation must be  
detected 3 times before it is accepted.  
Freq down Previous track/ Fast reverse  
1 8  
Freq up  
Next track / Fast forward  
P2. 0 KEYB0  
P2.1 KEYB1  
P2.2 KEYB2  
Preset down Disc down  
P 1  
P 3  
Preset up  
Scan  
P2  
Disc up  
Intro scan/ Disc scan  
Disc down  
1 9  
2 0  
2 1  
2 2  
P4 /  
A M S  
P3  
Disc up  
P4  
P5  
P6  
Shuffle disc/ Shuffle all  
Repeat track/ Repeat disc  
Intro scan/ Disc scan  
P6 /  
DOLBY  
P5 /  
MTL  
P 2  
CCR612S  
P2.3 KEYB3  
AF/  
RE G  
AUTO /  
M A N  
LOCAL/  
DX  
P2. 4 KEYB4  
LOUD/  
RESET  
FREQ  
DO WN  
VOL  
DOWN  
M O D E  
PRE DOWN/  
DOLBY  
2 3  
2 4  
P2. 5 KEYB5_F SCL  
P2.6 KEYB6_FSDA  
ST EREO  
S CA N  
SEL. DISP.  
PRE UP/  
MTL  
FREQ. UP  
VO L UP  
P O W E R  
B A N D  
M UTE SEL ECT  
T A  
PT Y  
AS T  
Figure 6 Fixed keyboard  
4.4.2  
Detachable keyboard  
The detachable keyboard is scanned every 20 milliseconds (10 msec. for the small fixed keyboard). For  
debouncing, the same situation must be detected 2 times (3 times for the small fixed keyboard) before it  
is accepted.  
The microcontroller will automatically detect that the detachable front is removed, and will switch the radio  
off. Placing the front on the radio does not cause the radio to switch on.  
40  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
4
P 1  
P 3  
5
P4 /  
A M S  
6
P6 /  
P5 /  
P 2  
DO LB Y  
MTL  
DETACHABLE  
KEYBOARD  
SCANNER  
7
9
AF/  
REG  
AUTO /  
M A N  
LO CAL/  
DX  
LO U D/  
R E S E T  
F REQ  
V O L  
PCF8574  
PRE DO WN/  
DO LBY  
M O D E  
D O W N  
D O W N  
1 0  
1 1  
2 3  
15  
1 4  
S D A  
P2.5 KEYB5_FSDA  
ST EREO  
PRE UP/  
M T L  
SEL. DISP.  
FREQ. UP  
VOL UP  
S C A N  
AS T  
S C L  
2 4  
P2 .6 K EY B6 _F SC L  
T A  
B AN D  
M U T E SELECT  
PT Y  
CCR612S  
1 8  
P2.0 KEYB0  
S C A N  
Freq down  
Freq up  
Previous track/Fast reverse  
Next track / Fast forward  
1 9  
P2 .1 K EY B1  
LO UD/  
R ES E T  
F REQ  
Preset down Disc down  
D O W N  
Preset up  
Disc up  
2 0  
2 1  
2 2  
P2.2 KEYB2  
P2 .3 K EY B3  
Scan  
P2  
Intro scan/ Disc scan  
Disc down  
FREQ .  
U P  
P T Y  
TA  
P3  
Disc up  
P4  
Shuffle disc/ Shuffle all  
Repeat track/ Repeat disc  
Intro scan/ Disc scan  
S E L  
L O CAL /  
AF /  
B A N D  
P5  
DI SP  
D X  
R E G  
P6  
P2.4 KEYB4  
VOL DOWN  
A S T  
SEL ECT  
P O W E R  
VO L U P  
Figure 7 Detachable keyboard  
4.4.3  
Keyboard options  
Not all keys need to be installed. The following options are possible:  
Preset select options  
1.  
2.  
P-1 through P-6 keys.  
The function AMS is available in this case.  
SHUFFLE DISC, REPEAT TRACK, SHUFFLE ALL and REPEAT DISC are available now.  
PRE-UP / PRE-DOWN keys.  
The function AMS is not available in this case.  
SHUFFLE DISC, REPEAT TRACK, SHUFFLE ALL and REPEAT DISC are not available now.  
41  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
No digital sound control chip installed.  
In this case, the keys VOL-UP, VOL-DOWN are not required.  
The following keys are optional. If omitted, the related functionality is not available, but other functions  
are not affected.  
- AUTO/MANUAL (Function also available by pressing FREQ-UP and FREQ-DOWN together)  
- LOUD  
(Loudness function also available in user programmable options; reset function  
not available)  
- DISPLAY  
- PTY  
- MUTE  
- MODE  
- SCAN  
- LOCAL/DX  
By means of an option diode, a selection can be made for a momentary power key (connected to port  
KEYB0 and ground) or a static on/off key (connected between port IGN and ground).  
4.5  
Power stabilizer interface.  
For switching the radio on and off, the microcontroller is linked with the voltage stabilizer circuit TDA3602.  
The pins involved in this interface are RESET, ON and HOLD.  
Figure 8 shows a circuit diagram of the reset circuitry and the voltage stabilizer interface.  
The TDA3602 has a number of different states, which are selected by the voltage on the state control input  
Vsc on pin 4. The following states are used:  
State  
OFF  
Vsc  
Description  
No power  
-
COMA  
> 3.6 V  
State when radio is off. Microcontroller supply is  
in low current mode; other supply voltages are  
off.  
RESET  
ON  
1.2V < Vsc < 2.0V  
< 1.2 V  
State during reset. Microcontroller supply is in  
high current mode; other supply voltages are still  
off.  
State when radio is on. All supply voltages are on.  
To switch the radio on, the voltage stabilizer must be brought in reset state. It generates a reset pulse for  
the microcontroller with its reset output pin. The microcontroller program starts, and decides whether the  
radio must stay on or must switch off again. When it must stay on, output pin "ON" is pulled low, bringing  
the TDA3602 in the "ON" state. Else, the stabilizer stays in reset state, or returns to coma state eventually.  
42  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
The following events must bring the voltage stabilizer in reset state:  
Main power supplied  
Ignition or static on/off switch closed  
Power key pressed  
Power voltage is OK again after an engine start  
The reset pulse for the microcontroller must be at least 20 msec. wide, measured at the threshold level  
(max. 3.5 V).  
After the end of the reset pulse the power key is sensed and the "KEYB0" output is pulled low to keep the  
stabilizer into the reset mode.  
When the radio should stay on, (see switching on and off, paragraph 6.1), the "ON" output is pulled low  
after the check of the option diodes and when the power key is released.  
After approximately 400 msec., the microcontroller tests the HOLD input. If it is low, something is wrong  
and the set is switched off, but internally a reset will be generated and the set will try to switch on again.  
Else it is continuously monitored for supply voltage failure e.g. starting the cars engine.  
Ignition Contact or  
static on/off  
switch  
BA T T E R Y  
160µ H  
7.5A  
2200µ  
VS3 +5V  
standby  
25  
HOLD  
1
Vd d  
5
7
V p  
HOLD  
Vreg3  
18  
8
KEYB0  
Vb u  
POWER  
key  
D 1  
47µ  
3 3 k  
680µ  
TDA3602  
Power  
Stabilizer  
CCR612S  
1 k  
Vs c  
30  
4
O N  
VS1 +8.5V  
47 µ  
State  
Control  
C 1  
4 7 n  
Vreg1  
2
9
4 7 n  
1 0 k  
3
RESET  
4 70 n  
4 7 n  
C2  
1µ  
VS2 +5V  
47µ  
Vreg2  
100k  
4
4 k 7  
RESET  
Vs s  
T1  
120k  
G N D  
47k  
47k  
6
IGN  
36  
T 2  
22k  
470n 120k  
47k  
100n/  
100k  
4 V7  
for static  
on/off swiitch 10µ  
Figure 8 Interface with TDA3602 Power stabilizer  
Note,  
The power key is a momentary push-button, closed only as long as it is pressed down.  
43  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
4.6  
LCD display.  
The LCD display is a 143 segment display, with a character set that includes umlaut (ü) characters.  
The display consists of the following fields:  
- Text field for 8 alpha-numerical characters;  
- Numerical digit for display of the preset number;  
- 15 Icons for: REG, EON, AST, SCAN, LOC, AF, TP, ST, TA, PTY, LOUD, DOLBY, CLIP, MTL, AMS.  
Figure 9 shows a possible layout of the LCD display  
EON AST SCAN LOC AF TP  
ST TA PTY  
LOUD  
CLIP  
MTL  
AMS  
REG  
P2  
Digit 1  
2
3
4
5
6
7
8
9
P
A
A
G
D
F
B
F
B
C
K
I
L
J
G
E
C
M
N
H
D
E
Figure 9 Liquid Crystal Display (LCD)  
The 143 segment display is driven by one PCF8576 operating in 1:4 multiplex mode (4 backplanes BP0,  
BP1, BP2 and BP3) and a 1/4 (4 levels) LCD bias configuration.  
44  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
Appendix II defines the connection of the segments of the display. Appendix III shows the character set.  
Figure 10 shows a diagram of the LCD driver interface.  
EON AST SCAN LOC AF TP  
ST TA PTY  
LOUD  
CLIP  
BP0  
BP2  
MTL  
BP1  
BP3  
REG  
AMS  
P 2  
1
2
3
4
5
6
7
8
9
Digit  
+5V  
S 0  
S39  
Vdd  
BP 0  
BP 1  
BP2  
BP3  
OSC  
PCF8576  
SCL SD A  
I²C-bus  
Figure 10 Display module for 143 segments with PCF8576  
4.7  
Non Volatile Memory.  
This device is a 512 byte static CMOS EEPROM with I2C-bus interface. It has low power consumption and  
guarantee a minimum of 100,000 erase/write cycles per byte and 10 years of non volatile data retention.  
+5V  
1
2
3
4
8
7
6
5
W P  
A 1  
V d d  
R C  
PCF8594  
A 2  
S C L  
S D A  
I²C-Bus  
Vss  
Figure 11 Non-Volatile Memory  
Appendix I shows the layout of data in the NVM.  
45  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
5
KEY FUNCTIONS  
In the following table External mode is: CD-changer mode, Cassette mode or External plug mode.  
Key  
Description  
POWER  
When the radio is off, this key generates a reset pulse to start the  
microcontroller. The voltage stabilizer is switched on, but the radio will start  
playing only after the key is released.  
Pressed while the radio was on, the radio is switched off. It saves all  
information about its current setting, and restores the information when  
switched on again.  
BAND  
Step cyclically through the tuning bands (not accessible in Cassette & External  
mode) in the order:  
FM-1 -> FM-2 -> MW -> LW -> SW -> FM-1 -> ...  
FM-AST -> FM-1 -> ...  
MW-AST -> MW -> ...  
Depending on the installed band option diodes, the LW, MW and or SW bands  
may be skipped. Depending on the option concerning the band limits and  
tuning grid the LW band will be disabled (option set to USA).  
When a new band is selected, the radio is tuned to the preset or frequency that  
was last used in that band.  
In option programming mode, this key toggles the current option:  
2 SPKRS  
<-> 4 SPKRS  
LOUD OFF <-> LOUD ON  
TA LVL -2 <-> -1..0..+1..+2  
46  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
Key  
Description  
AST  
When pressed short (not in Cassette & External mode) :  
- If the radio is in FM-1 or FM-2 band, it switches to FM-AST band.  
- If the radio is in MW band, it switches to MW-AST band.  
- In other bands, nothing happens.  
In the new band, the radio selects the preset or frequency that was last used  
in that band.  
When pressed longer than 2 seconds (until the radio bleeps):  
The radio switches to FM-AST or MW-AST band as described above, and  
starts an AST search in that band. (Not in the LW, SW band). The TA mode  
is ignored during the AST search.  
In an AST search, the whole band is scanned, and the 6 strongest stations  
are stored in the 6 preset memories, strongest station first.  
When less than 6 stations are found, higher preset locations are not  
changed. When the AST search is completed, the radio bleeps and selects  
preset 1. The AST search can also be started if the radio is in cassette mode  
or in external mode.  
AUTO/MANUAL  
This key is used to switch between automatic and manual tuning mode (not in  
Cassette & External Mode). When in automatic tuning mode the FREQ-UP /  
FREQ-DOWN keys are pressed, the radio increases or decreases the  
frequency until a station is found. In manual tuning mode the frequency runs  
as long as the FREQ-UP / FREQ-DOWN key is pressed, and stops as soon as  
the key is released.  
The display will show the new state as either "AUTO" or "MANUAL" for 4  
seconds. After that period, the band and frequency will be displayed for at  
least 2 seconds.  
FREQ-UP  
FREQ-DOWN  
These keys are used for tuning. Operation depends on the auto/manual  
switch. (FREQ-UP & FREQ-DOWN keys are not accessible in Cassette &  
External mode)  
The preset number is removed from the display when the radio was previously  
in preset mode (a preset number was displayed).  
The radio will be muted during tuning.  
The display will show at any moment the band and current frequency.  
When the two keys are pressed together, the radio switches between  
search/manual tuning just as if the AUTO/MANUAL key is pressed. This can  
be used as an alternative for the AUTO/MANUAL key.  
47  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
Key  
Description  
(continued)  
FREQ-UP  
FREQ-DOWN  
Automatic tuning mode:  
The radio will increase/decrease the frequency until a new station is found.  
At the end of the band it will wrap around and continue on the other side. If  
after one bandsweep no stations are found and in Local mode the radio will  
switch to Dx mode, the search then will stop after one complete sweep in Dx  
mode.  
Band  
Frequency step size  
USA  
Europe  
FM  
MW  
LW  
SW  
200 kHz  
10 kHz  
-
100 kHz  
9
1
1
kHz  
kHz  
kHz  
1
kHz  
In FM:  
- When TA mode is on, the search will only stop at traffic stations.  
Manual tuning mode:  
The radio will increase/decrease the frequency as long as the FREQ-UP /  
FREQ-DOWN key is pressed. The radio will go back to automatic tuning  
mode when the FREQ-UP / FREQ-DOWN keys are not pressed within 6  
seconds.  
Band Frequency step size  
USA  
Europe  
First step  
FM  
100  
10  
-
50 kHz  
de-mute when key released MW  
9
1
1
kHz  
kHz  
kHz  
LW  
SW  
1
After 0.5 seconds  
12.5 steps/second  
FM  
MW  
200  
10  
-
100 kHz  
9
1
1
kHz  
kHz  
kHz  
de-mute when key released LW  
SW  
1
In user option programming mode, the FREQ-UP / FREQ-DOWN keys are  
used to step through the available options. Each option can be toggled by the  
band key.  
48  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
Key  
Description  
(continued)  
FREQ-UP  
FREQ-DOWN  
CD-changer mode, short press.  
In CD-changer mode a short push on the FREQ UP and FREQ DOWN keys is  
used to respectively move one track up or one track down.  
CD-changer mode, long press.  
In CD-changer mode pushing FREQ UP or FREQ DOWN longer then two  
seconds is used to respectively play the CD fast-forward or fast-backward.  
SCAN  
Frequency Scan. Continuous automatic search tuning, pausing for 6 seconds  
on every station found.  
The search direction is always search up and the algorithm is the same as for  
the normal search, see keys FREQ-UP / FREQ-DOWN.  
INTRO SCAN  
CD-changer mode, short press.  
In CD-changer mode a short push on the SCAN key will start the intro scan  
mode of the CD-changer. The CD-changer will now play the first ten seconds  
of each track on the current CD. The intro scan mode can be cancelled by a  
second short push on the SCAN key, by pushing an other CD-changer control  
key or by leaving CD mode.  
DISC SCAN  
CD-changer mode, long press.  
In CD-changer mode a long push on the SCAN key will start the intro disc  
mode of the CD-changer. The CD-changer will now play the first ten seconds  
of each available disc. The disc scan mode can be cancelled by a short push  
on the SCAN key, by pushing an other CD-changer control key or by leaving  
CD mode.  
P1 - P6  
When pressed short, these keys select a preset programme directly. The AF  
follow mode on/off state will be set according to the state stored in NVM.  
When pressed longer than 2 seconds (until the radio bleeps), these keys serve  
to store the current station in preset memory. In FM, the state of the AF follow  
mode on/off switch is stored together with the frequency. Also the RDS PI  
code, programme service name and AF list are stored.  
In cassette mode, some of these keys have additional functions:  
- P4 Switch the AMS function on/off. When on, the AMS icon is on.  
AMS  
- P5 Switch MTL mode on/off. When on, the MTL icon is on.  
- P6 Switch DOLBY on/off. When on, the DOLBY icon is on.  
MTL  
DOLBY  
49  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
Key  
Description  
(continued)  
CD-changer mode, short press.  
In CD-changer mode, the keys P2, P3, P4, P5, P6 have additional functions:  
- P2 Move to the next available disc  
- P3 Move to an eventual previous disc  
DISC DOWN  
DISC UP  
SHUFFLE DISC  
- P4 Switch the CD-changer to shuffle mode. The CD-changer will now play  
the tracks on the current disc in random order. Shuffle track mode is  
cancelled by shortly pressing P4 once more or by selecting an other  
CD-changer mode.  
- P5 Switch the CD-changer to repeat mode. The CD-changer will now repeat  
playing the current track. Repeat mode can be cancelled by shortly  
pressing P5 once more or by selecting an other CD-changer mode.  
- P6 In CD-changer mode a short push on the P6 key will start the intro scan  
mode of the CD-changer. The CD-changer will now play the first ten  
seconds of each track on the current CD. The intro scan mode can be  
cancelled by a second short push on the P6 key, by pushing an other  
CD-changer control key or by leaving CD mode.  
REPEAT TRACK  
INTRO SCAN  
CD-changer mode, long press  
In CD-changer mode, a long press on the keys P4, P5, P6 provides additional  
functions:  
- P4 Switch the CD-changer to shuffle disc mode. The CD-changer will now  
play the tracks on the all available disc in random order. Shuffle disc  
mode is cancelled by shortly pressing P4 or by selecting an other  
CD-changer mode.  
SHUFFLE ALL  
- P5 Switch the CD-changer to repeat disc mode. The CD-changer will now  
repeat playing the current disc. Repeat disc can be cancelled by shortly  
pressing P5 or by selecting an other CD-changer mode.  
- P6 In CD-changer mode a long push on the P6 key will start the intro disc  
mode of the CD-changer. The CD-changer will now play the first ten  
seconds of each track on the current CD. The intro scan mode can be  
cancelled by a short push on the P6 key, by pushing an other CD-changer  
control key or by leaving CD mode.  
REPEAT DISC  
DISC SCAN  
50  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
Key  
Description  
PRE-UP  
These keys are installed only if the keys P1 - P6 are not installed.  
PRE-DOWN  
When pressed short, these keys are used to step to the next/previous preset  
programme. The AF follow mode on/off state will be set according to the state  
stored in NVM.  
When pressed longer than 2 seconds (until the radio bleeps), the current  
station is stored in the last selected preset number. In FM, the state of the AF  
follow mode is stored together with the frequency. Also the RDS PI code,  
programme service name and AF list are stored.  
When PRE-UP and PRE-DOWN are pressed together, the current programme  
can be stored in a preset number to be selected:  
1. A blinking preset number will be displayed.  
2. Press PRE-UP or PRE-DOWN to step to the desired preset number.  
3. Press either PRE-UP or PRE-DOWN longer than 2 seconds (until the  
radio bleeps). The station is now stored. The preset number on the  
display becomes steady again.  
In cassette mode, these keys have additional functions:  
MTL  
- PRE-UP  
Switch MTL mode on/off  
When on, the MTL icon is on.  
DOLBY  
- PRE-DOWN Switch DOLBY on/off.  
When on, the DOLBY icon is on.  
CD-changer mode:  
In CD-changer mode, the keys PRE UP and PRE DOWN P6 have additional  
functions:  
- PRE UP  
Move to the next available disc  
DISC UP  
- PRE DOWN Move to an eventual previous disc  
DISC DOWN  
PTY  
This key is active only if the radio is in FM.  
When pressed the current received PTY code is displayed. In case no PTY  
code is received, "NO PTY" is displayed.  
The user can now select a PTY code with FREQ-UP / FREQ-DOWN keys.  
When no key was pressed for 6 seconds, the radio returns to normal mode.  
The PTY scan is started by pressing the PTY key for 2 seconds (until the radio  
bleeps). A search is started for the selected PTY code.  
When a PTY code is received the PTY icon is on.  
When a PTY search is busy, the PTY icon is blinking.  
51  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
Key  
TA  
Description  
This key is active only if the radio is in FM.  
It serves to switch TA mode on/off.  
When TA mode is on, and a traffic announcement is transmitted:  
- If the radio is muted, it will be de-muted for the duration of the traffic  
announcement.  
- If the radio was in cassette or external mode, it will switch temporarily to  
radio mode.  
- Temporary switch over to an EON linked station when EON detects a traffic  
announcement on that other station.  
- If the volume setting was very low, it will be raised temporarily. If the user  
does not change the volume setting, it will return to the original value at the  
end of the traffic announcement.  
- The TA icon (and the EON icon in case of EON TA) will blink.  
The current traffic announcement can be cancelled by pressing the TA key,  
the TA mode will not be switched off. This can be useful to cancel for example  
an unwanted EON traffic announcement.  
The radio will automatically start a search when switching on TA mode and the  
current station is not a traffic station.  
52  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
Key  
AF  
Description  
When pressed short:  
Switches AF follow mode on/off.  
The state of the AF follow mode is displayed by the AF Icon:  
Icon off:  
Icon on:  
AF follow mode off  
AF follow mode on; RDS reception OK.  
Icon blinking: AF follow mode selected, but no RDS data  
received.  
When AF follow mode is on, the radio will from time to time measure the  
signal strength of the alternative frequencies that come with the RDS data.  
The interval between measurements depends on the signal strength of the  
current station, in the order of 1 minute for strong stations to a few seconds  
for weak stations. When the radio finds an alternative frequency that is - in  
several successive measurements - stronger than the current frequency, it  
switches over to that frequency.  
REGIONAL  
When pressed longer than 2 seconds (until the radio bleeps):  
Toggles the regional on/off status displayed via an icon.  
To check whether an alternative frequency is a real alternative for the  
current station, the radio compares PI codes.  
- Regional mode is on:  
The PI codes must be exactly identical or a SUPRA regional variant.  
- Regional mode is off:  
The region identification code in the PI code is ignored.  
When regional mode is off, the radio may switch to any programme service  
carrying a PI code equal to the current PI code. In this case the regional  
identification is not taken into account. When regional mode is on, the radio  
will only switch to a programme service carrying exactly the same  
programme. In both cases the radio may switch to transmitters broadcasting  
in Supra-regional mode. For USA application (RBDS) the regional function  
will only work for PI codes above B000hex. PI codes below B000hex do not  
have regional variants. AF switching is only allowed to stations with exactly  
the same PI code.  
53  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
Key  
Description  
DISPLAY  
By default (in radio mode), the display will show the programme service name  
of the current station, or - when not available - the band and frequency.  
The display key serves to show available information:  
- Programme TYpe name  
- Band and frequency  
- Programme Service name  
Each time this key is pressed, the display changes to the next item in the list. If  
an item is not available, it is skipped.  
When the display key is not pressed within 6 seconds, or when any other key  
is pressed, the display returns to the default state.  
DISPLAY  
CD-changer mode.  
In CD-changer mode the key DISPLAY is used to show the time played from  
the current track. The display mode will be cancelled automatically after ten  
seconds.  
VOL-UP,  
These keys are installed only if a digital sound control chip is installed.  
VOL-DOWN  
The VOL-UP and VOL-DOWN keys increment/decrement the setting of the  
current analogue function. The setting is changed with 4/8 steps per second,  
as long as the key is held down, or until the end of the range has been  
reached. For volume, balance and fader, each step is variable dB (8 steps per  
second), for bass each step is 1.5 dB (TEA6320/6322) or 1.8 dB  
(TEA6321/6323) and for treble each step is 1.5 dB (4 steps per second).  
By default, volume is changed. No indication on the display is given in that  
case.  
With the select key, the function on which the VOL-UP and VOL-DOWN keys  
operate can be changed to: bass, treble, balance or fader. (See select key  
description). In these modes, the setting is shown on the display.  
SELECT  
When pressed short:  
It changes the function on which the VOL-UP, VOL-DOWN keys operate to:  
bass, treble, balance or fader. Each time the key is pressed, the next  
function is selected.  
The fader function is only available if the 2/4 loudspeakers option in the user  
programmable options was set to "4 SPKRS".  
By default, the VOL-UP and VOL-DOWN keys operate on volume. When  
none of the keys select, VOL-UP or VOL-DOWN is pressed within 6  
seconds, or when any other key is pressed, the default function volume is  
restored. This key function is disabled if no digital sound control chip is  
installed.  
54  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
Key  
Description  
(continued)  
SELECT  
When pressed longer than 4 seconds (until the radio bleeps):  
User option programming mode is entered.  
In this mode the user can select the next options:  
- 2-Loudspeakers / 4-Loudspeakers,  
(in 2-speaker mode, the fader function is not available).  
(This option is skipped when no digital sound control chip is  
installed).  
- Loudness on/off,  
(alternative for the loudness key, if loudness option is available).  
- TA volume (A selection can be made of 5 different sound levels for  
traffic news and PTY alarm messages This option is skipped when no  
digital sound control chip is installed).  
The FREQ-UP / FREQ-DOWN keys must be used to step through the  
functions that can be selected.  
The band key must be used to toggle an option.  
The user option programming mode is left when the select key is pressed  
again, when none of the keys select, FREQ-UP / FREQ-DOWN or band is  
pressed for 6 seconds, or when any other key is pressed.  
LOUD  
When pressed short:  
Toggles the loudness on/off state. When loudness is on, bass and treble is  
added to the analog settings when the volume setting is low.  
When pressed longer than 4 seconds (until the radio bleeps):  
Performs an analogue reset function: bass, treble, balance and fader are set  
to mid-range, and loudness is switched off.  
RESET  
MUTE  
This key serves to switch the "muted" state on/off.  
When muted:  
- All audio output is suppressed  
- The text "MUTE" is displayed.  
- In cassette mode the cassette player will be stopped.  
- In CD-changer mode the CD-changer will be stopped.  
The muted state is switched off, when the mute key is pressed again, or when  
any other key is pressed. The muted state will be temporarily suspended when  
the radio is in TA mode and a traffic announcement is received, or when a PTY  
alarm message is received.  
55  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
Key  
Description  
STEREO  
This key is only active in FM. It is used to force mono reception if stereo  
reception has too much noise. The mono/stereo state is reset to stereo by all  
user tuning operations or preset selections.  
After pressing the key, the current state is displayed in the LCD text window by  
means of the text "STEREO" or "MONO" for 4 seconds. If - within that period -  
the key is pressed again, the state is toggled (only possible when a stereo  
transmitter is received), and the new state is displayed - again for 4 seconds.  
The stereo icon on the display shows the state of the stereo decoder. The icon  
is on in case of stereo reception. The icon is off in case of mono reception or in  
case forced mono is selected.  
LOCAL/DX  
This key can be used to control an attenuator in the FM antenna circuit during  
search. Attenuation may be inserted to reduce intermodulation caused by  
strong adjacent stations.  
By pressing the LOCAL/DX key, the current Local / Dx status is toggled. This  
status is displayed via an icon.  
For FM, the Local / Dx switch is incorporated in the TEA6811. Putting the radio  
in Local mode results in an attenuation of the aerial signal with 15 dB. For AM,  
the signal levels read back from the TEA6822 are used to create the Local /Dx  
functionality. In AM mode, the search stop level for Local is set 22 dB higher  
than when the radio is in Dx-mode.  
MODE  
This key is used to overrule the default selection of the audio source: radio,  
CD-changer, cassette or external.  
Each time the key is pressed, the next input source is selected in the order:  
radio -> CD-changer -> cassette -> external  
with the restrictions:  
- CD-changer is selected only if the CD-changer was connected during  
power-on.  
- Cassette is selected only if a tape is present in the cassette deck.  
- External is selected only if a connector is inserted in the external input  
jack.  
56  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
6
6.1  
FUNCTIONAL DESCRIPTION  
Switching on / off  
To switch the radio on, a reset pulse must be applied to the microcontroller. The software will then perform  
a number of checks, and may either turn on all voltages, or switch the radio off again.  
With a bad battery, the voltage may drop so far that the "HOLD" output of the voltage stabilizer goes low,  
e.g. during starting of the cars engine, and the radio switches off. The radio will switch on immediately  
when the voltage returns to a normal value.  
If the radio was previously switched off by turning the ignition off, it will switch on when the ignition key is  
turned on again.  
The radio can also be switched on with the power key while ignition is off. In that case a sleep timer is  
started that turns the radio off after 60 minutes unless ignition is switched on in the mean time.  
The table below shows the differences between the static on/off switch and the momentary power key.  
Option  
Pin or key  
Power key  
Switch on  
Switch off  
Momentary  
on/off key  
Power key pressed.  
Power key pressed.  
IGN pin  
When previous switched off  
by IGN.  
When IGN pin goes low.  
After 60 minutes when  
switched on by power key  
while IGN pin was low.  
Static on/off  
switch  
Static  
switch  
When switch is closed.  
When switch is open.  
Valid for  
both  
Power  
supply  
When power supply is OK  
again.  
When a power failure is  
detected.  
Detachable  
keyboard  
When keyboard is removed.  
57  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
6.2  
6.2.1  
Tuning  
Band switching  
Band switching can be done with the AST and BAND keys (see Figure 12). In the AST bands, the AST  
icon is on. Band switching is only accessible in Radio Mode.  
BAND  
FM-1  
AST  
FM-2  
FM-AST  
BAND  
BAND  
BAND  
BAND  
SW  
MW-AST  
M W  
BAND  
AST  
LW  
BAND  
Figure 12 Band selection  
6.2.2  
Manual/search tuning  
Figure 13 shows how to switch between the tuning modes. In preset mode, a preset number is shown on  
the display. In other modes, no preset number is shown. When leaving preset mode, any update of preset  
data (current frequency, PS name, AF list, AF follow mode bit) is stored in NVM. Switching of tuning mode  
may be done either by pressing FREQ-UP and FREQ-DOWN keys together, or by pressing the AUTO /  
MANUAL key. When pressing AUTO / MANUAL or FREQ-UP / FREQ-DOWN, a message "AUTO" or  
"MANUAL" is shown on the display to indicate the new state.  
When key FREQ-UP or FREQ-DOWN is pressed, the radio will make one frequency step. When the key  
is pressed longer than 0.5 seconds, the frequency will start to run with a repetition rate of 12.5 steps per  
second.  
First tuning step  
- De-mute at key release  
- Frequency step size:  
SW LW MW FM  
USA  
Europe  
1
1
-
1
10 100 kHz  
50 kHz  
9
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Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
Repetitive steps (after 0.5 sec)  
- 12.5 steps/sec  
- De-mute at key release  
- Frequency step size:  
SW LW MW FM  
USA  
Europe  
1
1
-
1
10 200 kHz  
100 kHz  
9
PRESET  
MODE  
PRE UP PRE DOWN  
PRE UP PRE DOWN  
1
3
4
5
6
2
3
4
5
1
2
6
AUTO/MAN  
FREQ DOWN  
FREQ UP  
MANUAL  
TUNING  
MODE  
AUTO/MAN  
AUTO/MAN  
AUTOMATIC  
SEARCH  
MODE  
6 sec  
timeout  
Figure 13 Tuning modes  
In search tuning mode, after pressing the FREQ-UP / FREQ-DOWN key, the frequency starts running and  
will stop on either a new frequency or at the frequency from which the search was started. For this search  
action two criteria are taken into account:  
- search sensitivity Local (high signal level) or Dx (low signal level).  
- Ta mode on, the search will only stop at traffic programmes.  
When the radio is in Local mode and after one band sweep no station was found, the search sensitivity  
is switched to Dx. If still no valid station can be found, the radio returns to the frequency from which the  
search was started.  
Depending on these criteria a maximum of two band sweeps will be made, trying to offer a frequency  
fulfilling the search criteria.  
For FM, a Local / Dx switch is incorporated in the TEA6811. Putting the radio in Local mode results in an  
attenuation of the aerial signal with 15 dB. For AM, the signal levels read back from the TEA6822 are used  
to create the Local /Dx functionality. In AM mode, the search stop level for Local is set 22 dB higher than  
when the radio is in Dx-mode.  
During a tuning action - manual or automatic - the display will show the running frequency at any time.  
59  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
6.2.3  
Frequency scan  
The frequency scan mode enables the user to listen to all stations transmitted in the selected band (FM,  
MW, LW or SW). The radio pauses for 6 seconds on every station found before search is started again.  
During frequency scan, TA mode is included in the stop criteria in the same way as during normal search.  
EON traffic announcements are skipped during frequency scan mode.  
Frequency scan is cancelled by every other tuning function. The radio will switch to the last valid station  
when the cancelling takes place during search. Frequency scan mode is only accessible when the radio  
is in Radio Mode.  
6.2.4  
Selecting preset stations  
In each band, there are 6 presets. To select a preset station:  
If the radio is equipped with 6 preset selection keys (P1 - P6)  
- Press short on the key of the desired station.  
If the radio is equipped only with PRE-UP / PRE-DOWN keys  
- Press either PRE-UP or PRE-DOWN repeatedly until the desired station is selected.  
(Do not hold down the key, because then the preset store function will be executed).  
If initially no preset number was displayed, the first preset selected will be the last preset number  
used in the band.  
Selecting preset stations is only accessible in Radio Mode.  
6.2.5  
Storing stations in preset memory  
If the radio is equipped with 6 preset selection keys (P1 - P6)  
- Press key of the preset number to be stored until the radio bleeps (2 seconds).  
The station is now stored.  
If the radio is equipped only with PRE-UP / PRE-DOWN keys  
- If the current preset number is the desired preset number:  
- Press either the PRE-UP or PRE-DOWN key until the radio bleeps (2 seconds).  
The station is now stored.  
- If the current preset number is not the desired preset number:  
- Press keys PRE-UP and PRE-DOWN at the same time.  
The preset number will start to blink.  
- Press either PRE-UP or PRE-DOWN repeatedly until the desired preset number is displayed.  
(The tuned frequency does not change).  
- Press either the PRE-UP or PRE-DOWN key until the radio bleeps (2 seconds).  
The station is now stored. The preset number stops blinking.  
The preset store mode is cancelled when the PRE-UP and PRE-DOWN are pressed again  
together, when an other key is pressed or when no key is pressed for 6 seconds.  
Storing stations in preset memory is only accessible in Radio Mode.  
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Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
6.2.6  
AST search  
To start an AST (Automatic Store Tuning) search, press the AST key until the radio bleeps (2 seconds).  
Now, the following actions are taken:  
1. If the radio is not in an AST band, it switches to the relevant AST band  
FM-1, FM-2 -> FM-AST  
MW  
-> MW-AST  
AST is not available in the LW and SW bands.  
2. The 6 strongest stations will be stored in the NVM, ignoring TA mode. The whole band is scanned  
for transmitters, a maximum of two sweeps will be made, one in Local mode and if necessary one  
in Dx mode). If less than 6 stations were found, the last preset memory locations are not replaced.  
3. Preset-1 is selected.  
During the whole process, the radio is muted and the message "STORE" is shown on the display unless  
the radio is in CD-changer / External / Cassette Mode.  
6.2.7  
The LOCAL/DX key  
The user can control the search sensitivity of the radio via the so called Local/Dx feature. In Local mode,  
the radio will only stop at strong stations. In Dx mode, a search action will also stop at weaker stations. The  
Local/Dx status is displayed via an icon. After power on, the radio will always go in Dx mode.  
When the radio is in search tuning mode the tuner Local/Dx status depends on the Local/Dx setting. As  
soon as the radio is in stable tuning condition the tuner attenuator status will be Dx.  
6.3  
CD-Changer, Cassette and external source interface  
CCR612 is equipped with five different audio sources (radio, CD-changer, cassette, external plug and  
bleep) each source is associated with a corresponding mode. Only one source can be selected at a time.  
Source selection is accomplished by the sofac or by source select pins in case no sofac is installed.  
Source switching can be invoked in two ways. The first way is pushing the MODE key, this will result in  
toggling through all available sources(Radio, CD-changer, Cassette, External plug, Radio). Furthermore  
an external event can invoke the source switching ( see Figure 14). The following external events are  
possible: insert cassette, eject cassette, insert external plug and remove external plug.  
Automatic selections can be overruled by the MODE key.  
When the radio is switched off, the source select state is stored in NVM. The same state is selected again  
when the radio is switched on.  
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Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
Radio  
mode  
connector out  
tape out  
tape in  
connector in  
Cassette  
mode  
External  
mode  
CD-changer  
mode  
Figure 14 Source selection by external event.  
6.3.1  
The MODE key  
Automatic source selection can be overruled by using the MODE key. Each time the MODE key is  
pressed, the next source is selected in the order:  
Radio -> CD-changer -> Cassette -> External.  
Cassette mode can be selected only if a tape is present in the cassette deck.  
External mode can be selected only if a connector is present in the external audio jack.  
6.3.2  
CD-changer mode  
The presence of a CD-changer is asserted during the power-on phase of the radio. The CD-changer can  
only be selected if the CD-changer was present during power-on. The CD-changer mode can only be  
selected with the MODE key.  
While in CD-changer mode the following key mapping applies:  
TABLE Key mapping in CD-changer mode  
Key  
short press  
long press  
FREQ-UP  
NEXT TRACK  
PREVIOUS TRACK  
DISC UP  
FAST FORWARD  
FAST REVERS  
FREQ-DOWN  
PRE-UP  
PRE-DOWN  
DISC DOWN  
DISC DOWN  
DISC UP  
P2  
P3  
P4  
SHUFFLE DISC  
REPEAT TRACK  
INTRO SCAN  
INTRO SCAN  
SHUFFLE ALL  
REPEAT DISC  
DISC SCAN  
P5  
P6  
SCAN  
DISC SCAN  
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Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
6.3.3  
Cassette functions  
The cassette interface is based on a mechanical tape deck. When a cassette is playing, the display will  
show the text "PLAY >" or "PLAY <" indicating the play direction. During fast winding, no direction  
information is available. The display will show "CAS WIND". When fast winding for more than 4 seconds,  
the set will temporarily switch to radio mode.  
While in cassette mode, the keys P-4, P-5/PRE-UP and P-6/PRE-DOWN control the functions AMS  
(Automatic Music Search), MTL (Metal/Chromium) and Dolby respectively. The keys toggle the  
corresponding output pins, the function itself is executed by the cassette deck circuitry. When a function  
is not available in the cassette deck, the corresponding pin must be connected to ground.  
The state of the AMS, ME/CR and Dolby functions is displayed by icons. If a TEA632x is installed the  
cassette solenoid and AMS pause function are available. The solenoid function takes care of playing in  
the correct direction after switching to cassette mode and together with the AMS pause function, it takes  
care of controlling the AMS function. Search (in both directions) for the next music piece by detecting a  
blank area on the tape. If no TEA632x is installed (potentiometer sound control) the AMS function and the  
solenoid function are not available. If the cassette drive does not have the AMS function the CAMS pin  
must be connected to ground.  
6.3.4  
External audio source  
An external audio input is available to connect e.g. a CD player. The external input jack has a switch to  
sense whether a connector is inserted. While the radio is in external mode, the text "EXTERNAL" is shown  
on the display. When no external audio selection is available the EXSTAT pin must be connected to  
Ground.  
6.4  
Audio control  
Most of the audio control facilities are available only if a digital sound and fader control chip (Sofac) is  
installed. If no digital sound control chip is used, the following signals should be used in combination with  
potentiometer control:  
- pin AUMUTE  
- pin LOUDN  
- pin TA  
Mute status;  
Loudness status;  
Traffic announcement or PTY alarm message in progress;  
- pin SEL0 / SEL1 Source selection.  
The volume at power on is limited to -10 dB when digital sound control is available.  
63  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
6.4.1  
The SELECT key  
By default, the VOL-UP and VOL-DOWN keys control the volume. To select other functions, press the  
select key short until the desired function is shown on the display. Figure 15 shows how control functions  
are selected using the select key. If the 2-speaker option is selected in the user programmable options,  
the fader function is not available and the fader setting is always mid-range. This function is disabled if no  
digital sound control chip is installed.  
SELECT  
SELECT  
SELECT  
SELECT  
SELECT  
VOLUME  
BASS  
TREBLE  
BALANCE  
FADER  
6
s
e
o
c
6
s e  
c
6
s
e
c
6
s
e
o
c
t i m e  
u
t
t i m e  
o
u
t
t i m e  
o
u
t
t i m e  
u
t
Figure 15 Selection of sound control functions  
6.4.2  
Changing a setting  
To change a setting, press the VOL-UP or VOL-DOWN key until the desired level is reached. As long as  
a key is pressed, the bass and treble function changes with 4 steps per second and the volume, balance  
and fader function will change with 8 steps per second. The table below shows the control range and step  
size for the audio control functions.  
Function  
Step size  
Range  
TEA6320,6322/  
TEA6321,6323  
Volume  
Bass  
variable  
mute, -61 dB, -53 dB, -47 dB, -43 dB, -39 dB, -37 dB  
-35 dB, -33 dB, -31 dB, -30 dB, -29 dB, .. +19dB, +20 dB  
1.5 dB/  
1.8 dB  
-15 dB to +15 dB /  
-18 dB to +18 dB  
Treble  
1.5 dB  
-12 dB to +12 dB  
Balance  
variable  
rigth: mute, -30 dB, -22, -16, -12, -8, -6, -4, -2, 0 dB  
left: 0 dB, -2, -4, -6, -8, -12, -16, -22, -30 dB, mute  
Fader  
variable  
front: mute, -30 dB, -22, -16, -12, -8, -6, -4, -2, 0 dB  
rear: 0 dB, -2, -4, -6, -8, -12, -16, -20, -30 dB, mute  
The volume setting is not shown on the display. Other functions are shown on the display(e.g. BASS +6).  
6.4.3  
The LOUD key / RESET function  
Loudness is switched on/off by pressing the LOUD key short. When loudness is on, bass and treble are  
added to the audio signal, depending on the volume level. The loudness function is carried out by the  
TEA632x. If no TEA632x is installed the loudness function is carried out by external loudness circuitry  
controlled by the LOUDN pin. The loudness on off status is displayed via an icon. When the loudness key  
is pressed for 4 seconds (until the radio bleeps), the reset function is executed. This function sets bass,  
64  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
treble, balance and fader to mid-range and will switch loudness off. The display shows the text "RESET"  
for 2 seconds.  
6.4.4  
The MUTE key  
When the mute key is pressed, all audio output is suppressed, and the display will show the text  
"MUTE". Any keypress will cancel the mute state. The audio control settings are not altered. When TA  
mode is on and a traffic announcement or a PTY alarm message is broadcast, the mute state is  
temporarily suspended.  
6.4.5  
Phone mute  
When pin Aumute is pulled to ground externally by a connected car phone, the car radio sound is muted  
and the display will show "PHONE".  
6.4.6  
Power amplifier diagnostics control  
CCR612 can be equipped with power amplifiers with a diagnostics interface. This interface consists of one  
pin which is low at erroneous situations. CCR612S will continuously monitor this pin and can detect one  
of the following situations:  
Clipping  
- The bass and or volume level will be decreased depending on the amount of clipping.  
- While clipping is detected and clipping control is active the clipping icon is on.  
Too high temperature / short circuit  
- CCR612 will display the error message "ERROR" on the LCD.  
6.4.7  
User programmable options  
Some options can be programmed by the user. The options are stored in NVM, and remain in effect until  
reprogrammed by the user. The options are:  
2 SPKRS / 4 SPKRS  
Indicates how many loudspeakers are connected to the radio. If "2 speakers" is selected, the fader  
function is not available, and fader setting is always mid-range.  
LOUD ON / LOUD OFF  
If no loudness key is installed, loudness can be switched on/off using this option in case the loudness  
function is available.  
TA LVL -2 / -1 / 0 / + 1 / + 2  
The volume level during a Traffic Announcement or PTY Alarm can be set to one of 5 fixed values  
varying from -12 dB to -4 dB in steps of 2 dB. When this function is selected during Traffic  
Announcement or PTY Alarm the volume level will change to the level selected.  
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Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
Figure 16 explains how user options can be programmed.  
SELECT  
>
4 seconds  
2 SPKRS / 4 SPKRS  
LOUD ON / LOUD OFF  
TA LVL  
BAND  
FREQ DOWN  
FREQ UP  
SELECT  
6 sec  
timeout  
EXIT  
Figure 16 Programming user options  
6.5  
RDS / RBDS functions  
The RDS / RBDS functions are available only if the radio is tuned to an FM band.  
6.5.1  
AF follow mode  
The AF follow mode mechanism is switched on/off by pressing the AF key short. When AF follow mode  
is on, the AF icon is switched on. If no RDS data is received, the AF icon blinks.  
In AF follow mode, the radio measures at regular intervals, (interval time depends on the signal quality),  
the signal level at frequencies that are mentioned in the list of alternative frequencies (AF’s) for the current  
station. For these measurements, the reception of the current station is interrupted for a very short period  
(appr. 7 milliseconds), and it is hardly noticeable. If an alternative frequency is stronger than the current  
stationforafewseconds (dependingonthe signalquality), theradio switchestothat alternativefrequency.  
It switches also if the quality of the current station becomes suddenly very poor, or if its RDS data cannot  
be received. The quality of a station is a function of signal level as well as multipath condition.  
The AF follow mechanism is always active when AF follow mode is on, even when the radio is muted or  
is in CD-changer or cassette or external mode.  
When the user starts a tuning action (band, preset, FREQ-UP / FREQ-DOWN), or when the radio is  
switched off, the new frequency and the AF list are stored in NVM. These will be used later on when  
selecting the preset again.  
66  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
6.5.2  
PTY functions  
CCR612 offers the user the possibility to search for a station with a certain user selected PTY code. When  
key PTY is pressed, the currently received PTY code is displayed. If no PTY code is received the display  
will show "NO PTY" . By pressing the key FREQ-UP or FREQ-DOWN, the user can select the PTY code  
of his choice. When key PTY is pressed for 2 seconds (while the radio is in the PTY selecting mode), the  
radio will start a PTY search for the selected PTY code. Figure 17 shows how to select a programme type.  
Only one programme type can be selected.  
PTY  
RDS RBDS  
N EW S  
N E W S  
INF ORM  
SPO RTS  
TALK  
A FF A IR S  
I N F O  
S P O R T  
R OC K  
E D U C A T E  
D R A M A  
C U L T U R E  
S C I E N C E  
V A R I E D  
CLS ROCK  
ADLT HIT  
SOFT RCK  
TOP 40  
FREQ UP FREQ DOWN  
COUNTRY  
OLDIES  
P O P  
R O C K  
M
M
SO FT  
NOSTALGA  
J AZZ  
CLASSICL  
R & B  
M. O. R. M  
L IG H T M  
C L AS S I C  
O T H E R M  
PTY > 2 sec.  
A L A R M  
SOFT R&B  
LANGUAGE  
REL MUSIC  
REL TALK  
PERSNLTY  
PUBLIC  
6 S ec t im eo ut o r  
o th er k ey ,  
c an ce l PTY s elec t  
m o d e  
Start PTY S can in u p direc tion  
TE ST  
ALERT!  
Figure 17 Selecting the PTY code  
PTY codes "ALARM" / "TEST" / "ALERT!" can not be selected. The radio will respond to a PTY alarm  
message in the same way as a TA traffic announcement, independent of TA mode. For the USA  
application the RBDS PTY table is used.  
During a PTY search the PTY icon blinks. When the radio receives a PTY code, the PTY icon is on.  
When TA mode is on during a PTY search, the radio will first try to find a station which is a traffic station  
with the correct PTY code. When no such station can be found (even not in Dx mode), the radio will drop  
67  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
the TA requirement and search only for a station with the correct PTY code. If still no station can be found,  
the radio will return to its original tuned frequency.  
6.5.3  
Traffic announcements  
Traffic announcements have a special meaning only when TA mode is on.  
To switch TA mode on/off, press the TA key. When TA mode is on, the TA icon is on. If the current station  
is not a traffic station, the TP icon blinks, and a warning bleep is generated every 30 seconds.  
If TA mode is on, the next happens when a traffic announcement is broadcast:  
1. If the traffic announcement is detected via EON, the radio will switch to the linked programme service  
transmitting the traffic announcement. The radio will stay at least 4 seconds on this programme  
before switchingback to theoriginalprogrammeto give thebroadcaster time tosynchronise theRDS  
TP and TA data over its network.  
AF follow mode is disabled during an EON traffic announcement.  
2. If the radio is in CD-changer, cassette mode or in external mode, it switches temporarily to radio  
mode, and the display will show the programme service name of the received station.  
3. If the radio is muted, it is temporarily de-muted, and the "MUTE" message is removed from the  
display.  
4. If the volume was low, it is raised to the TA volume level as installed under the user options (see:  
user programmable options). Also, the TA output pin is made low.  
5. The TA icon blinks. In case of a traffic announcement on an EON linked station, the EON icon will  
also blink.  
At the end of the traffic announcement, the old situation is restored again (after an EON traffic  
announcement the radio will switch back to the original station). If the user has not changed the volume  
setting, it is restored to the value before the traffic announcement. If the volume level was changed, the  
new value will be retained.  
The current traffic announcement can be cancelled by pressing the TA key, the TA mode remains on.  
6.5.4  
PTY alarm broadcasts  
A PTY alarm message is treated the same way as a traffic announcement. A PTY alarm message will  
break-in, even when TA mode is off.  
68  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
7
RDS / RBDS FACILITIES.  
As soon as the radio is steadily tuned to an FM station, it will start collecting RDS information. The next  
items are extracted from the stream of RDS data:  
- PI  
Programme Identification code;  
Programme Service name;  
Programme TYpe code;  
- PS  
- PTY  
- TP  
- TA  
- AF  
- EON  
Traffic Programme bit;  
Traffic Announcement bit;  
Alternative Frequency list;  
Enhanced Other Network information.  
Most data is validated, e.g. the same data must be received twice before it is accepted as a new value.  
7.1  
Programme Identification code  
The PI code is invisible for the user. It is used to check whether the correct station is received after a  
preset is selected, or when the AF follow mechanism switches to an alternative frequency.  
When a station is stored in NVM, also its PI code is stored. When the same preset is selected again, the  
radio verifies the PI code. If the PI code is not correct, and AF follow mode is on, the radio will search for  
a station with the right PI code, first by scanning all available alternative frequencies, then if after a timeout  
of 6 seconds the PI code is still not correct, a search tuning operation is started.  
During AST Search, the PI code is used to avoid that the same programme is stored at different presets,  
when it can be received on more than one frequency. For USA application (RBDS) the regional function  
will only work for PI codes above B000hex. PI codes below B000hex do not have regional variants. AF  
switching is only allowed to stations with exactly the same PI code.  
7.2  
Programme Service name  
By default, the radio will display the received Programme Service name as soon as it is available. The PS  
name is stored in the preset memory locations. The name is then immediately displayed when a preset  
station is selected.  
Tuning frequency instead of PS name is displayed when the radio is in manual tuning mode. Also, by  
means of the display key, the radio can be forced to display PTY code, frequency and PS name  
respectively.  
7.3  
Programme TYpe  
PTY is a code for the kind of programme that is broadcast. Figure 17 shows the names of PTY codes that  
are defined for RDS. CCR612 can display the PTY currently received, and it can search for a station with  
a specific PTY code. The user can select a PTY code and start a scan for a station transmitting this PTY  
code.  
69  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
7.4  
Traffic Announcements  
RDS data contains two bits called TP (Traffic Programme) and TA (Traffic Announcement), see the table  
below for the meaning of these bits.  
TP  
0
TA  
0
Meaning  
No announcements, no traffic station  
0
1
Traffic announcements indirect via at least one EON  
referenced station, (traffic station)  
1
1
0
1
Traffic announcements on this station, (traffic  
station)  
Traffic announcement on this station now  
The radio will start a search for a traffic station when the TA mode is switched on when the current station  
is not a traffic station.  
If TA mode is on, and the current station is not a traffic station, the TP icon will blink, and a warning bleep  
is generated every 30 seconds.  
If a traffic announcement is received while TA mode is on, and the radio is in CD-changer, cassette mode,  
external mode or muted, this mode is temporarily overruled and the traffic announcement is passed on.  
If the volume setting was very low, it is temporarily raised to get the user’s attention.  
If a traffic announcement is received via EON (RDS group 14B is received indicating the PI code of the  
other station transmitting the traffic announcement), the radio will check its internal pool store and will try  
to switch over to the other station transmitting the traffic announcement. The radio will stay on this other  
station for at least 4 seconds to give the broadcaster time to synchronise the RDS TP and TA data over  
its network.  
By pressing the TA key the current traffic announcement will be cancelled but the radio remains in TA  
mode.  
If during a traffic announcement the signal quality becomes too weak resulting in the fact that RDS  
reception is lost, CCR612 will cancel the traffic announcement after a timeout of 2 minutes.  
7.5  
Alternative Frequency following  
The radio will always assemble a list of alternative frequencies from the received RDS data, even when  
AF follow mode is off. When the current frequency is left (by tuning, band switching or by turning the radio  
off), the alternative frequency list is stored in NVM if it is different from the previous stored list.  
70  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
When AF follow mode is on, the next actions are taken:  
1. When selecting a preset, the radio will load the AF list from NVM, and measure the signal strength  
of the primary frequency and all alternative frequencies. It will then select the strongest station with  
the correct PI code, before the radio is de-muted.  
(PI codes are compared with the value stored in the preset data in NVM.)  
If no station with the correct PI code is found, after 6 seconds the radio will start a search tuning for  
a station with the correct PI code. If still not found, it will accept the new station, but it will not update  
the PI code stored in NVM.  
Search tuning can be cancelled by switching AF follow mode off or by pressing the AUTO / MANUAL  
key. The radio will then return to the original frequency.  
2. At regular intervals - depending on the signal strength of the current station - the signal strength of  
alternative frequencies is measured. The interval varies from appr. 80 seconds when the signal level  
of the current station is very strong to appr. 3 seconds when it is very weak.  
3. When for a certain time an AF is stronger than the current frequency, or when the current frequency  
becomes suddenly unacceptable e.g. due to multipath, the radio switches to the best alternative  
frequency.  
When the programme service is left (by tuning, band switching or by turning the radio off), the new  
frequency is stored in NVM as the primary frequency for that preset.  
The AF follow algorithm has provisions for special circumstances such as:  
- Mountains and buildings. All signal strengths vary rapidly due to multipath distortion. Switch when  
the multipath distortion level becomes unacceptable.  
- Loss of RDS data or station changes PI code. Select an alternative frequency with correct PI  
code.  
The "quality" of a station is a value that is based on signal level as well as multipath level read from  
the TEA6822 by means of the I2C-bus.  
7.6  
EON preset update  
When the tuned station transmits EON information, the alternative frequencies stored for the station  
presets are updated via EON. Only those alternative frequency lists of station presets can be updated  
whose PI codes match one of the PI codes transmitted via EON. Whether or not regional variants of the  
PI code are taken into account depends on the status of the regional selection. If the regional selection  
is switched on, the transmitted PI code must exactly match the PI code to update.  
If after travelling any distance while tuned to a programme service, a user selects a preset for another  
station which is cross-referenced by EON-information, CCR612 has to find an acceptable frequency for  
the new selected station in the new area, without resorting to a PI search. This should occur regardless  
of the distance travelled, assuming of course that the station is transmitted in the new area.  
71  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
APPENDIX I NVM layout and initialisation  
Words (16 bits) are stored with the most significant byte first (in lowest address).  
Ordering of the bits in a byte or word:  
Bit 0 is the least significant (rightmost) bit  
Bit 7 is the most significant (leftmost) bit of a byte  
Bit 15 is the most significant (leftmost) bit of a word  
Layout of NVM  
sub  
address  
function  
meaning / encoding  
00  
Checksum  
Checksum of two NVM check code bytes:  
NVM check code byte(0) + NVM check code byte(1) + 2  
01  
02  
Volume  
Bass  
00H = mute, 01H = -61 dB 3CH = +20 dB  
00H = -15 dB  
00H = -18 dB  
0AH = mid-range  
0AH = mid-range  
14H = +15 dB(6320/2)  
14H = +18 dB(6321/3)  
03  
04  
Treble  
00H = -12 dB  
08H = mid-range  
10H = +12 dB  
Balance  
00H = right muted  
01H = right -30 dB  
09H = mid range  
11H = left -30 dB  
12h = left muted  
05  
06  
Fader  
00H = front muted  
01H = front -30 dB  
09H = mid range  
11H = rear -30 dB  
12H = rear muted  
system status  
bit 0  
bit 1  
bit 2  
bit 3  
bit 4  
bit 5  
bit 6  
bit 7  
0 = radio mode  
0 = not cassette mode 1 = cassette mode  
0 = external plug in  
0 = tape in drive  
0 = Dolby off  
0 = AMS off  
0 = Me/Cr off  
0 , not used  
1 = external mode  
1 = external plug not in  
1 = tape not in drive  
1 = Dolby on  
1 = AMS on  
1 = Me/Cr on  
07  
system status  
bit 0  
bit 1  
bit 2  
bit 3  
bit 4  
bit 5  
bit 6  
bit 7  
0 = loudness off  
0 = 2-speakers  
0, not used  
0 = TA mode off  
0 = Regional mode off 1 = Regional mode on  
0 = PTY mode off  
0 = no CD-changer  
0 = no External source 1 = External source mode  
1 = loudness on  
1 = 4-speakers  
1 = TA mode on  
1 = PTY mode on  
1 = CD-changer mode  
72  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
Layout of NVM  
sub  
address  
function  
meaning / encoding  
bit 0/1/2 Band  
08  
system status  
000 = FM1  
001 = FM2  
010 = FM-AST  
011 = MW  
100 = MW-AST  
101 = LW  
110 = SW  
bit 3  
0 = NV PS name is not ok 1 = NV PS name is ok  
bit 4,5,6 TA volume level 6 5 4  
- 8 dB 0 0 0  
- 6 dB 0 0 1  
- 4 dB 0 1 0  
-12 dB 0 1 1  
-10 dB 1 0 0  
7 Unused  
09 - 0A  
0B - 0E  
NVM check code BCD encoded (1 nibble per digit). Most significant digit in leftmost  
position  
presets  
0B high nibble FM1  
0C high nibble FM-AST  
0D high nibble MW-AST  
0E SW  
low nibble FM2  
low nibble MW  
low nibble LW  
Each nibble: 1-6 last used preset  
0
not in preset mode  
0F - 38  
PI codes  
0F - 1C FM-1  
1D - 2A FM-2  
2B - 38  
FM-AST  
For each band: 00,01  
PI code for manual/search tuned  
frequency  
02,03  
........  
PI code for preset-1  
0C,0D  
PI code for preset-6  
73  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
Layout of NVM  
sub  
address  
function  
meaning / encoding  
39 - F5  
AF lists  
39 - 77 FM-1  
78 - B6 FM-2  
B7 - F5 FM-AST  
For each band: 00 - 08  
AF list for manual/search tuned  
frequency  
09 - 11  
.........  
AF list for preset-1  
36 - 3E  
AF list for preset-6  
F6 - 157  
Preset  
Frequencies  
0F6 - 103 FM-1  
104 - 111 FM-2  
112 - 11F FM-AST  
120 - 12D MW  
12E - 13B MW-AST  
13C - 149 LW  
14A - 157 SW  
For each band: 00,01  
02,03  
manual/search tuned frequency  
frequency for preset-1  
........  
0C,0D  
frequency for preset-6  
Encoding of frequency:  
FM:  
freq = (<value> * 50 kHz) + 87.5 MHz  
bit 15 of each frequency word contains follow mode bit  
MW: freq = (<value> * 1 kHz) + 522 kHz  
LW:  
SW:  
freq = (<value> * 1 kHz) + 144 kHz  
freq = (<value> * 1 kHz) + 5.9 MHz  
158 - 1FF  
PS names  
158 - 18F FM-1  
190 - 1C7 FM-2  
1C8 - 1FF FM-AST  
For each band: 00..07  
PS name for manual/search tuned  
frequency  
08..0F  
.......  
PS name for preset-1  
30..37  
PS name for preset-6  
74  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
NVM initialisation values  
sub address  
function  
Checksum  
Volume  
Bass  
meaning / encoding  
02H, Checksum ( 0 + 0 + 2 )  
1DH, Maximal switch on volume  
0AH = mid-range  
00  
01  
02  
03  
04  
05  
06  
Treble  
08H = mid-range  
Balance  
Fader  
09H = mid-range  
09H = mid-range  
system status  
0CH  
bit 0,1 0 = radio mode  
bit 2  
bit 3  
bit 4  
bit 5  
bit 6  
bit 7  
1 = external plug not in  
1 = tape not in drive  
0 = Dolby off  
0 = AMS off  
0 = Me/Cr off  
0 ,not used  
07  
system status  
00H  
bit 0  
bit 1  
bit 2  
bit 3  
bit 4  
bit 5  
bit 6  
bit 7  
0 = loudness off  
0 = 2-speakers  
0 , not used  
0 = TA mode off  
0 = Regional mode off  
0 = PTY mode off  
0 = no CD-changer mode  
0 = no external plug mode  
08  
system status  
00H  
bit 0/1/2 Band  
000 = FM1  
bit 3 1 = NV PS name is ok  
bit 4/5/6 TA level -8dB = 000  
00H, 00H, Set to ’0000’  
09 - 0A  
0B - 0E  
0F - 38  
39 - F5  
security code  
presets  
00H, for each band and preset nr 0 is selected  
00H, for each band and preset PI code is 0000  
00H, for each band and preset AF list is filled with 00  
PI codes  
AF lists  
75  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
NVM initialisation values  
sub address  
F6 - 157  
function  
meaning / encoding  
00H  
Preset  
Frequencies  
for each band and preset Frequency is 0000  
FM = 87.5 MHz  
MW = 522 KHz  
LW = 144 KHz  
SW = 5.9 MHz  
158 - 1FF  
PS names  
00H, for each band and preset PS Name is 00 (No PS Name)  
76  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
APPENDIX II Segment addresses for 143 segment display  
Segment addresses for the used (143) segments. Note that BP0 and BP3 are swapped.  
PCF8576 pin  
Segment line  
Segment line  
S0  
BP3  
BP0  
.
BP1  
BP1  
.
BP2  
BP2  
REG  
1F  
BP0  
BP3  
EON  
1P  
AST  
SCAN  
LOC  
AF  
3P  
TP  
.
LCD pin  
1
2
S1  
1E  
1C  
.
1I  
3
S2  
1B  
2E  
2J  
1L  
4
S3  
2F  
5
S4  
2N  
.
2L  
6
S5  
2C  
3I  
2B  
3F  
7
S6  
3E  
3C  
.
8
S7  
3B  
4E  
4J  
3L  
9
S8  
4F  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
S9  
4N  
.
4L  
ST  
.
S10  
S11  
S12  
S13  
S14  
S15  
S16  
S17  
S18  
S19  
S20  
S21  
S22  
S23  
S24  
S25  
S26  
4C  
5I  
4B  
5F  
5E  
5C  
.
5P  
TA  
PTY  
.
5B  
6E  
6J  
5L  
6F  
6N  
6C  
7N  
.
6L  
DP(= P2)  
7J  
6B  
7B  
8F  
.
.
7C  
8I  
.
8E  
.
8K  
8B  
9B  
MTL  
9F  
8P  
.
8C  
9G  
AMS  
9E  
8N  
8H  
7H  
7I  
9C  
CLIP  
9D  
8D  
8M  
7D  
7M  
LOUD  
[)(]  
9A  
8L  
8J  
8G  
7L  
8A  
7G  
7A  
7K  
77  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
PCF8576 pin  
Segment line  
Segment line  
S27  
BP3  
BP0  
7E  
BP1  
BP1  
7F  
6H  
6I  
BP2  
BP2  
.
BP0  
BP3  
7P  
6A  
6P  
5G  
5A  
4A  
4P  
3G  
3A  
2A  
2P  
1G  
1A  
LCD pin  
28  
29  
S28  
6D  
6G  
6K  
5J  
30  
S29  
6M  
5D  
31  
S30  
5N  
5H  
4H  
4I  
32  
S31  
5M  
4D  
5K  
4G  
4K  
3J  
33  
S32  
34  
S33  
4M  
3D  
35  
S34  
3N  
3H  
2H  
2I  
36  
S35  
3M  
2D  
3K  
2G  
2K  
1J  
37  
S36  
38  
S37  
2M  
1D  
39  
S38  
1N  
1H  
40  
S39  
1M  
BP0  
1K  
41  
42  
BP1  
43  
BP2  
44  
BP3  
78  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
APPENDIX III LCD Display Character Set.  
2 0  
2 8  
2 1  
2 9  
2 2  
2A  
2 3  
2B  
2 4  
2 5  
2 6  
2E  
2 7  
2 F  
9 0  
9 8  
9 1  
9 9  
9 2  
9A  
9 3  
9B  
9 4  
9 5  
9 6  
9E  
9 7  
9 F  
2 C  
2 D  
9 C  
9 D  
3 0  
3 8  
3 1  
3 9  
3 2  
3A  
3 3  
3B  
3 4  
3 5  
3 6  
3E  
3 7  
3 F  
A0  
A8  
B0  
A1  
A9  
B1  
A2  
A A  
B2  
A3  
A B  
B3  
A4  
A C  
B4  
A5  
A D  
B5  
A6  
A E  
B6  
A7  
A F  
B7  
3 C  
3 D  
4 0  
4 1  
4 2  
4 3  
4 4  
4 5  
4 6  
4 7  
B8  
C 0  
C 8  
D 0  
B9  
C 1  
C 9  
D 1  
B A  
C 2  
C A  
D 2  
B B  
C 3  
C B  
D 3  
B C  
C 4  
C C  
D 4  
B D  
C 5  
C D  
D 5  
B E  
C 6  
C E  
D 6  
B F  
C 7  
C F  
D 7  
4 8  
5 0  
5 8  
6 0  
4 9  
5 1  
5 9  
6 1  
4A  
5 2  
5A  
6 2  
4B  
5 3  
5B  
6 3  
4 C  
5 4  
5 C  
6 4  
4 D  
5 5  
5 D  
6 5  
4E  
5 6  
5E  
6 6  
4 F  
5 7  
5 F  
6 7  
6 8  
7 0  
6 9  
7 1  
6A  
7 2  
6B  
7 3  
6 C  
7 4  
6 D  
7 5  
6E  
7 6  
6 F  
7 7  
D 8  
E0  
D 9  
E1  
D A  
E2  
D B  
E3  
D C  
E4  
D D  
E5  
D E  
E6  
D F  
E7  
7 8  
7 9  
7A  
7B  
7 C  
7 D  
7E  
7 F  
E8  
E9  
E A  
E B  
E C  
E D  
E E  
E F  
F0  
F8  
F1  
F9  
F2  
F3  
F4  
F5  
F6  
F7  
FF  
8 0  
8 8  
8 1  
8 9  
8 2  
8A  
8 3  
8B  
8 4  
8 5  
8 6  
8E  
8 7  
8 F  
8 C  
8 D  
F A  
F B  
F C  
F D  
F E  
Figure 18 LCD Character Set  
79  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
APPENDIX IV CIRCUIT DIAGRAMS  
80  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
dummy page for MAIN BOARD PART 1A  
81  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
dummy page for MAIN BOARD PART 1B  
82  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
dummy page for MAIN BOARD PART 1C  
83  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
dummy page for MAIN BOARD PART 2A  
84  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
dummy page for MAIN BOARD PART 2B  
85  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
dummy page for MAIN BOARD PART 3  
86  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
dummy page for FRONT BOARD PART FP-1A  
87  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
dummy page for FRONT BOARD PART FP-1B  
88  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
dummy page for ICE MODULE EURO 1  
89  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
dummy page for CCR612 mainboard pcb top  
90  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
dummy page for CCR612 mainboard pcb bottom  
91  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
dummy page for ICE module pcb  
92  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
dummy page for front panel top  
93  
 
Philips Semiconductors  
User Manual of High-End RDS/EON  
Car Radio System CCR612 (V0.3)  
Application Note  
96029  
dummy page for SUB BOARD PACS  
94  
 

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