Philips Semiconductors
Product specification
Hi-fi stereo audio processor; I2C-bus
TDA8425
Truth tables
Truth tables for the switch functions
Table 3 Source selector
function
stereo
ML1 ML0 IS
channel
1
1
0
1
0
1
1
1
1
0
1
0
0
1
0
0
1
1
1
2
1
1
2
2
stereo
sound A
sound B
sound A
sound B
Table 4 Pseudo stereo/spatial stereo/linear stereo/forced mono
choice STL EFL
spatial stereo
1
1
0
0
1
0
1
0
linear stereo
pseudo stereo
forced mono(1)
Table 5 Mute
mute
MU
active; automatic
after POR(2)
not active
1
0
Notes
1. Pseudo stereo function is not possible in this mode.
2. Where: POR = Power-ON Reset.
Truth tables for the volume, bass and treble controls
Table 6 Volume control
2 dB/step
V × 5
V × 4
V × 3
V × 2
V × 1
V × 0
(dB)
6
4
1
1
1
1
1
1
1
1
1
1
1
0
−62
−64
0
0
1
1
1
1
1
1
0
0
1
0
≤ −80
≤ −80
0
0
1
0
1
0
0
0
1
0
1
0
October 1988
7
NXP [ NXP ]
