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| TDA7575B Datasheet, PDF (22/32 Pages) STMicroelectronics – 2 x 75W multifunction dual-bridge power amplifier with integrated digital diagnostics | |||
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Software specifications
TDA7575B
6.1
Examples of bytes sequence
1 - Turn-On diagnostic - Write operation
Start Address byte with D0 = 0
ACK IB1 with D6 = 1 ACK IB2 ACK STOP
L
2 - Turn-On diagnostic - Read operation
Start Address byte with D0 = 1
ACK DB1 ACK DB2 ACK STOP
The delay from 1 to 2 can be selected by software, starting from T.B.D. ms
3a - Turn-On of the power amplifier with mute on, diagnostic defeat.
Start Address byte with D0 = 0
ACK
IB1
ACK
IB2
ACK STOP
X000XXXX
XXX1XX1X
3b - Turn-Off of the power amplifier
Start Address byte with D0 = 0
ACK
IB1
ACK
IB2
ACK STOP
X0XXXXXX
XXX0XXXX
4 - Offset detection procedure enable
Start Address byte with D0 = 0
ACK
IB1
ACK
IB2
ACK STOP
XX1XX1XX
XXX1XXXX
5 - Offset detection procedure stop and reading operation (the results are valid only for the
offset detection bits (D2 of the bytes DB1, DB2, DB3, DB4).
Start Address byte with D0 = 1
ACK DB1 ACK DB2 ACK STOP
â The purpose of this test is to check if a D.C. offset (2V typ.) is present on the outputs,
produced by input capacitor with anomalous leakage current or humidity between pins.
â The delay from 4 to 5 can be selected by software, starting from T.B.D. ms
22/32
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