User's Manual

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).

Thisnote,DiagramsandPerformance,valid forCCR612radio sample(version D) controlledby CCR610S

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 numberingCCR612 radio sample. Unlikepreviousnote, the electricalcomponent numbers

of the PCB boards (Fig. 13b and Fig. 13d) domatch withthe electricaldiagrams (Fig.4, Fig.7 andFig.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 ).