Software specifications TDA7575B
22/32 Doc ID 14103 Rev 3
6.1 Examples of bytes sequence
1 - Turn-on diagnostic - Write operation
L
2 - Turn-on diagnostic - Read operation
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.
3b - Turn-off of the power amplifier
4 - Offset detection procedure enable
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).
● The purpose of this test is to check if a D.C. offset (2 V typ.) is present on the outputs,
produced by input capacitor with anomalous leakage current or humidity between pins.
● The delay from 4 to 5 can be selected by software, starting from T.B.D. ms
Start Address byte with D0 = 0 ACK IB1 with D6 = 1 ACK IB2 ACK STOP
Start Address byte with D0 = 1 ACK DB1 ACK DB2 ACK STOP
Start Address byte with D0 = 0 ACK IB1 ACK IB2 ACK STOP
X000XXXX XXX1XX1X
Start Address byte with D0 = 0 ACK IB1 ACK IB2 ACK STOP
X0XXXXXX XXX0XXXX
Start Address byte with D0 = 0 ACK IB1 ACK IB2 ACK STOP
XX1XX1XX XXX1XXXX
Start Address byte with D0 = 1 ACK DB1 ACK DB2 ACK STOP