TDA7566_06 Datasheet, PDF (21/28 Pages) STMicroelectronics – 4x40W multifunction quad power amplifier with built-in diagnostics features

TDA7566
6
Software specifications
Software specifications
All the functions of the TDA7566 are activated by I²C interface.
The bit 0 of the "ADDRESS BYTE" defines if the next bytes are write instruction (from μP to
TDA7566) or read instruction (from TDA7566 to µP).
Table 5. Chip Address:
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.
D0
X
D8 Hex
Table 6.
D7
D6
D5
D4
D3
D2
D1
D0
Table 7.
D7
D6
D5
D4
D3
IB1
0
Diagnostic enable (D6 = 1)
Diagnostic defeat (D6 = 0)
Offset Detection enable (D5 = 1)
Offset Detection defeat (D5 = 0)
Front Channel
Gain = 26dB (D4 = 0)
Gain = 12dB (D4 = 1)
Rear Channel
Gain = 26dB (D3 = 0)
Gain = 12dB (D3 = 1)
Mute front channels (D2 = 0)
Unmute front channels (D2 = 1)
Mute rear channels (D1 = 0)
Unmute rear channels (D1 = 1)
CD 2% (D0 = 0)
CD 10% (D0 = 1)
IB2
0
0
0
Stand-by on - Amplifier not working - (D4 = 0)
Stand-by off - Amplifier working - (D4 = 1)
Power amplifier mode diagnostic (D3 = 0)
Line driver mode diagnostic (D3 = 1)
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