TDA8426 Datasheet, PDF (6/24 Pages) NXP Semiconductors – Hi-fi stereo audio processor; I2C-bus

Philips Semiconductors
Hi-fi stereo audio processor; I²C-bus
Product specification
TDA8426
Subaddress
After the module address byte a second byte is used to select the following functions:
• Volume left, volume right, bass, treble and switch functions
The subaddress SAD is stored within the TDA8426. Table 1 defines the coding of the second byte after the module
address MAD.
Table 1 Second byte after module address MAD
128
64
32
16
8
4
2
1
MSB
LSB
function
volume left
volume right
bass
treble
switch functions
7
6
5
4
3
2
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
1
0
0
0
0
0
0
0
1
1
0
0
0
0
1
0
0
0
subaddress SAD
The automatic increment feature of the slave address enables a quick slave receiver initialization, within one
transmission, by the I²C-bus controller (see Fig.5).
Definition of 3rd byte
A third byte is used to transmit data to the TDA8426. Table 2 defines the coding of the third byte after module address
MAD and subaddress SAD.
Table 2 Third byte after module address MAD and subaddress SAD
MSB
LSB
function
volume left
VL
volume right
VR
bass
BA
treble
TR
switch functions S1
7
1
1
1
1
1
6
1
1
1
1
1
5
V05
V15
1
1
MU
4
V04
V14
1
1
EFL
3
V03
V13
BA3
TR3
STL
2
V02
V12
BA2
TR2
ML1
1
V01
V11
BA1
TR1
ML0
0
V00
V10
BA0
TR0
IS
March 1991
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