TDA7567PD Datasheet, PDF (23/30 Pages) STMicroelectronics – 4 x 50 W differential quad power amplifier with built-in diagnostics features

TDA7567PD
9
Software specifications
Software specifications
All the functions of the TDA7567PD are activated by I²C interface.
The bit 0 of the "Address Byte" defines if the next bytes are write instruction (from µP to
TDA7567PD) or read instruction (from TDA7567PD to µP).
Chip address
D7
1
1
0
1
1
0
(1)
1. Address selector bit, please refer to address selection description on Chapter 7.
X = 0 Write to device
X = 1 Read from device
If R/W = 0, the µP sends 2 "Instruction Bytes": IB1 and IB2.
Table 6. IB1
Bit
Instruction decoding bit
D7 0
Diagnostic enable (D6 = 1)
D6
Diagnostic defeat (D6 = 0)
Offset detection enable (D5 = 1)
D5
Offset detection defeat (D5 = 0)
Front channel
D4 Gain = 26 dB (D4 = 0)
Gain = 16 dB (D4 = 1)
Rear channel
D3 Gain = 26dB (D3 = 0)
Gain = 16dB (D3 = 1)
Mute front channels (D2 = 0)
D2
Unmute front channels (D2 = 1)
Mute rear channels (D1 = 0)
D1
Unmute rear channels (D1 = 1)
CD 2% (D0 = 0)
D0
CD 10% (D0 = 1)
Table 7. IB2
Bit
Current detection threshold
D7 High th (D7 = 0)
Low th (D7 =1)
D6 0
Instruction decoding bit
D0
X
D8 Hex
Doc ID 16903 Rev 1
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