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TDA7405 Datasheet, PDF (42/56 Pages) STMicroelectronics – EQUALIZER CARRADIO SIGNAL PROCESSOR
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TDA7405
Table 9. Volume1) (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
Note: 1. 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 10. Treble Filter (3)
MSB
LSB
D7 D6 D5 D4 D3 D2 D1 D0
FUNCTION
Treble Steps
0
0
0
0
0 -15dB
0
0
0
0
1 -14dB
:
:
:
:
::
0
1
1
1
0 -1dB
0
1
1
1
1 0dB
1
1
1
1
1 0dB
1
1
1
1
0 +1dB
:
:
:
:
::
1
0
0
0
1 +14dB
1
0
0
0
0 +15dB
0
0
0
1
1
0
1
1
Treble Center-frequency
10.0 kHz
12.5 kHz
15.0 kHz
17.5 kHz
Bass DC-Mode
0
On
1
Off
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