E-TDA7566 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

E-TDA7566

4 x 40 W multifunction quad power amplifier with built-in diagnostics features

STMicroelectronics 

Diagnostics functional description

TDA7566

4.7

I2C programming/reading sequence

A correct turn on/off sequence respectful of the diagnostic timings and producing no audible

noises could be as follows (after battery connection):

TURN-ON: (STANDBY OUT + DIAG ENABLE) --- 500 ms (min) --- MUTING OUT

TURN-OFF: MUTING IN --- 20 ms --- (DIAG DISABLE + STANDBY IN)

Car Radio Installation: DIAG ENABLE (write) --- 200 ms --- I2C read (repeat until All faults

disappear).

AC TEST: FEED H.F. TONE -- AC DIAG ENABLE (write) --- WAIT > 3 CYCLES --- I2C read

(repeat I2C reading until tweeter-off message disappears).

OFFSET TEST: Device in Play (no signal) -- OFFSET ENABLE - 30ms - I2C reading (repeat

I2C reading until high-offset message disappears).

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Doc ID 9801Rev 5

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