TDA7566

14/19

SOFTWARE SPECIFICATIONS

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).

Chip Address:

X = 0 Write to device

X = 1 Read from device

If R/W = 0, the

µP sends 2 "Instruction Bytes": IB1 and IB2.

IB1

IB2

D7

D0

1

1011

00

X

D8 Hex

D7

X

D6

Diagnostic enable (D6 = 1)

Diagnostic defeat (D6 = 0)

D5

Offset Detection enable (D5 = 1)

Offset Detection defeat (D5 = 0)

D4

Front Channel

Gain = 26dB (D4 = 0)

Gain = 12dB (D4 = 1)

D3

Rear Channel

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

CD 2% (D0 = 0)

CD 10% (D0 = 1)

D7

X

D6

used for testing

D5

used for testing

D4

Stand-by on - Amplifier not working - (D4 = 0)

Stand-by off - Amplifier working - (D4 = 1)

D3

Power amplifier mode diagnostic (D3 = 0)

Line driver mode diagnostic (D3 = 1)

D2

Current detection diagnostic enabled (D2 = 1)

Current detection diagnostic defeat (D2 = 0)

D1

X

D0

X