TDA7564B Datasheet, PDF (24/34 Pages) STMicroelectronics – 4 x 50W multifunction quad power amplifier with built-in diagnostics features

Software specifications
9
Software specifications
TDA7564B
All the functions of the TDA7564B are activated by I²C interface.
The bit 0 of the "ADDRESS BYTE" defines if the next bytes are write instruction (from µP to
TDA7564B) or read instruction (from TDA7564B to µP).
D7
1
1
0
1
1
0
0
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 = 26dB (D4 = 0)
Gain = 12dB (D4 = 1)
Rear Channel
D3 Gain = 26dB (D3 = 0)
Gain = 12dB (D3 = 1)
Mute front channels (D2 = 0)
D2
Unmute front channels (D2 = 1)
Mute rear channels (D1 = 0)
D1
Unmute rear channels (D1 = 1)
Clip detector 2% (D0 = 0)
D0
Clip detector 10% (D0 = 1)
D0
X
D8 Hex
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