TDA7566

Software specifications

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6

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).

Table 5.

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.

D7

D0

1101100

X

D8 Hex

Table 6.

IB1

D7

0

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)

Table 7.

IB2

D7

0

D6

0

D5

0

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)