TDA7561 Datasheet, PDF (14/19 Pages) STMicroelectronics – MULTIFUNCTION QUAD POWER AMPLIFIER WITH BUILT-IN DIAGNOSTICS FEATURES

TDA7561
SOFTWARE SPECIFICATIONS
All the functions of the TDA7561 are activated by I²C interface.
The bit 0 of the "ADDRESS BYTE" defines if the next bytes are write instruction (from µP to TDA7561) or read
instruction (from TDA7561 to µP).
Chip Address:
D7
D0
1
1
0
1
1
0
0
X
D8 Hex
X = 0 Write to device
X = 1 Read from device
If R/W = 0, the mP sends 2 "Instruction Bytes": IB1 and IB2.
IB1
D7
X
D6
Diagnostic enable (D6 = 1)
Diagnostic defeat (D6 = 0)
D5
Offset Detection enable (D5 = 1)
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)
D2
Mute front channels (D2 = 0)
Unmute front channels (D2 = 1)
D1
Mute rear channels (D1 = 0)
Unmute rear channels (D1 = 1)
D0
X
IB2
D7
D6
D5
D4
D3
D2
D1
D0
X
used for testing
used for testing
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)
X
X
X
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