TDA7567PD Datasheet, PDF (27/30 Pages) STMicroelectronics – 4 x 50 W differential quad power amplifier with built-in diagnostics features

TDA7567PD
10 Examples of bytes sequence
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
2 - Turn-on diagnostic - Read operation
Start Address byte with D0 = 1 ACK DB1 ACK DB2 ACK DB3 ACK DB4 ACK STOP
The delay from 1 to 2 can be selected by software, starting from 200 ms
3a - Turn-on of the power amplifier with 26 dB gain, mute on, diagnostic defeat, CD = 2 %
.
Start
Address byte with D0 = 0
ACK
IB1
X0000000
ACK
IB2
ACK STOP
XXX1XX11
3b - Turn-off of the power amplifier
Start Address byte with D0 = 0 ACK
4 - Offset detection procedure enable
IB1
ACK
IB2
ACK STOP
X0XXXXXX
XXX0XXXX
Start
Address byte with D0 = 0
ACK
IB1
ACK
IB2
ACK STOP
XX1XX11X
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 DB3 ACK DB4 ACK STOP
● 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 30 ms
Doc ID 16903 Rev 1
27/30