TDA7406 Datasheet, PDF (48/64 Pages) STMicroelectronics – Car radio signal processor

I2C bus interface
TDA7406
Note:
Table 11. 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 max. gain should be limited by software to the maximum value, which is needed
for the system.
Table 12.
MSB
D₇ D₆
0
0
1
1
0
1
0
1
Equalizer (3,4,5,6,7,8,9)
D₅ D₄ D₃ D₂ D₁
0000
0000
:
:
:
:
0111
0111
1111
1111
:
:
:
:
1000
1000
0
1
0
1
LSB
D₀
FUNCTION
Equalizer cut/boost level
0 -15dB
1 -14dB
::
0 -1dB
1 0dB
1 0dB
0 +1dB
::
1 +14dB
0 +15dB
Equalizer Q-Factor
2.2
1.8
1.4
1.0
Equalizer Center Frequency (only
Subaddresses 3,8,9)
62Hz(addr 3)/4kHz(addr 8)/15kHz(addr 9)
100Hz(addr 3)/6.24kHz(addr 8)/16kHz(addr 9)
DC mode EQ Band 1 (62/100 Hz, Subaddress. 4!)
on
off
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