TDA7439_08 Datasheet, PDF (14/23 Pages) STMicroelectronics – Three-band digitally-controlled audio processor

I²C bus addresses and data
6
I²C bus addresses and data
TDA7439
6.1
Chip address byte
The TDA7439 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).
Table 7. Function selection: sub-address byte
MSB
LSB
D7 D6 D5 D4 D3 D2 D1 D0
Function
X
X
X
B
0
0
0
0 Input selector
X
X
X
B
0
0
0
1 Input gain
X
X
X
B
0
0
1
0 Volume
X
X
X
B
0
0
1
1 Bass gain
X
X
X
B
0
1
0
0 Mid-range gain
X
X
X
B
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
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 8.
MSB
Input selector value (sub address 0x0)
LSB
D7 D6 D5 D4 D3 D2 D1 D0
X
X
X
X
X
X
0
0
X
X
X
X
X
X
0
1
X
X
X
X
X
X
1
0
X
X
X
X
X
X
1
1
Input multiplexer
IN4
IN3
IN2
IN1
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