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TDA7566 Datasheet(PDF) 18 Page - STMicroelectronics

Part # TDA7566
Description  4 x 40 W multifunction quad power amplifier with built-in diagnostics features
PDF  29 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TDA7566 Datasheet(HTML) 18 Page - STMicroelectronics

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Diagnostics functional description
TDA7566
18/29
Doc ID 9801Rev 5
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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