TDA8425V7 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
TDA8425
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 TDA8425. 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 TDA8425. 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
volume right
bass
treble
switch functions
7
VL 1
VR 1
BA 1
TR 1
S1 1
6
5
4
3
2
1
0
1
V05
V04
V03
V02
V01
V00
1
V15
V14
V13
V12
V11
V10
1
1
1
BA3
BA2
BA1
BA0
1
1
1
TR3
TR2
TR1
TR0
1
MU
EFL
STL
ML1
ML0
IS
October 1988
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