TDA7565_10 Datasheet, PDF (12/19 Pages) STMicroelectronics – Quad power amplifier with integrated step-up converter

Software specifications
4
Software specifications
TDA7565
All the functions of the TDA7565 are activated by I²C interface.
The bit 0 of the "ADDRESS BYTE" defines if the next bytes are write instruction (from µP to
TDA7565) or read instruction (from TDA7565 to µP).
Table 5.
Bit
Chip address
Instruction
D7
D6
D5
D4
D3
D2
D1
D0(R/W)
Address bit
Address bit
Address bit
Address bit
Address bit
Address bit
Address bit
Read/Write bit
0 = Write instruction
1 = read instruction
If R/W = 0, the µP sends 2 "Instruction Bytes": IB1 and IB2.
Table 6.
Bit
D7
D6
D5
D4
D3
D2
D1
D0
IB1
Instruction
Sel. freq. switch 1
Sel. freq. switch 2
Offset detection start (D5 = 1)
Offset detection stop (D5 = 0) (off)
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 1% (D0 = 0)
CD 10% (D0 = 1)
12/19
Doc ID 9800 Rev 4