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DESCRIPTION

The car radio diagnostic processor is an interface chip in BCD Technology intended for car radio applications. It is able to detect potential faults coming from any misconnection in the car radio or in the harness when installing the set.

■ WIDE OPERATING VOLTAGE RANGE

■ ST-BY FUNCTION (C-MOS)

■ LOW QUIESCENT ST-BY CURRENT CONSUMPTION

■ I2C BUS INTERFACE WITH 2 EXTERNALLY SELECTABLE ADDRESSES

■ UP TO 5 BTL EQUIVALENT INPUTS FOR FAULT DETECTION IN THE AUDIO CHANNELS

- short to GND

- short to Vs

- short across the load (at turn-on)

- open load (at turn-on)

■ 2 AUX INPUTS FOR FAULT DETECTION IN THE ANTENNA AND BOOSTERS SUPPLY LINE- short to GND- open load

■ WARNING PIN FUNCTION (interrupt facility) ACTIVATED IN THE FOLLOWING CONDITION:

- audio channel shorted to VS

- audio channel shorted to GND

- aux input shorted to GND

■ NOISE FREE DIAGNOSTICS OPERATION

■ PROTECTORS

■ LOAD DUMP VOLTAGE

■ OPEN GND

■ REVERSED BATTERY

■ ESD