TDA7439DS

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6

6.1

Chip address byte

The TDA7439DS chip address is 0x88.

6.2

Sub-address byte

The function is selected by the 4-bit sub address as given in Table 7. The three MSBs are

not used and bit D4 selects address incrementing (B = 1) or single data byte (B = 0).

6.3

Data bytes

The function value is changed by the data byte as given in the following tables, Table 8 to

Table 14.

In the tables of input gain, volume and attenuation, not all values are shown. A desired

intermediate value is obtained by setting the three LSBs to the appropriate value.

Table 7.

Function selection: sub-address byte

MSB

LSB

Function

D7

D6

D5

D4

D3

D2

D1

D0

X

X

X

B

0

0

0

0

Input selector

X

X

X

B

0

0

0

1

Input gain

XX

XB

0

0

1

0

Volume

XX

XB

0

0

1

1

Bass gain

X

X

X

B

0

1

0

0

Mid-range gain

XX

XB

0

1

0

1

Treble gain

X

X

X

B

0

1

1

0

Speaker attenuation, R

X

X

X

B

0

1

1

1

Speaker attenuation, L

Table 8.

Input selector value (sub address 0x0)

MSB

LSB

Input multiplexer

D7

D6

D5

D4

D3

D2

D1

D0

XX

XX

XX

0

0

IN4

XX

XX

XX

0

1

IN3

XX

XX

XX

1

0

IN2

XX

XX

XX

1

1

IN1