TDA7402_07 Datasheet, PDF (52/71 Pages) STMicroelectronics – Car radio signal processor

I²C bus interface
TDA7402
Note:
Table 15. Volume (2)
MSB
LSB
D₇ D₆ D₅ D₄ D₃ D₂ D₁ D₀
Attenuation
Gain/attenuation
0 0 0 0 0 0 0 0 (+32.0dB)
0 0 0 0 0 0 0 1 (+31.5dB)
:
: :::::
::
0 0 0 1 1 0 0 0 +20 .0dB
0 0 0 1 1 0 0 1 +19.5dB
0 0 0 1 1 0 1 0 +19.0dB
:
: :::::
::
0 0 1 1 1 1 1 1 +0.5dB
0 1 0 0 0 0 0 0 0.0dB
0 1 0 0 0 0 0 1 -0.5dB
:
: :::::
::
1 1 0 1 1 1 1 0 -79.0dB
1 1 0 1 1 1 1 1 -79.5dB
It is not recommended to use a gain more than 20dB for system performance reason. In
general, the maximum gain should be limited by software to the maximum value, which is
needed for the system.
Table 16. Treble filter (3)
MSB
LSB
D₇ D₆ D₅ D₄ D₃ D₂ D₁ D₀
Function
0000
0000
::::
0111
0111
1111
1111
::::
1000
1000
Treble steps
0 -15dB
1 -14dB
::
0 -1 dB
1 0 dB
1 0 dB
0 +1 dB
::
1 +14 dB
0 +15dB
00
01
10
11
Treble center frequency
10.0 kHz
12.5 kHz
15.0 kHz
17.5 kHz
Subwoofer + center speaker mode
0
On
1
Off
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