TDA7404 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
TDA7404 Datasheet PDF : 35 Pages
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I2C bus interface
TDA7404
Table 17. Subwoofer attenuator (left and right)
MSB
LSB
D7
D6
D5
D4
D3
D2
D1
D0
Function
Attenuation
0
0
0
0
0
0 0 dB
0
0
0
0
0
1 -1 dB
:
:
:
:
:
::
0
1
0
1
1
1 -23 dB
0
1
1
0
0
0 -24.5 dB
0
1
1
0
0
1 -26 dB
0
1
1
0
1
0 -28 dB
0
1
1
0
1
1 -30 dB
0
1
1
1
0
0 -32 dB
0
1
1
1
0
1 -35 dB
0
1
1
1
1
0 -40 dB
0
1
1
1
1
1 -50 dB
X
X
1
X
X
X
X
X Speaker Mute
Table 18. Soft-mute and mixing
MSB
D7
D6
D5
D4
D3
D2
0
0
1
1
0
1
0
0
0
1
1
0
1
1
0
0
0
1
1
0
1
1
LSB
D1
D0
Function
Mute
0 enable soft-mute
1 disable soft-mute
Mute/Zero Cross-Times
0
0.48 ms
1
0.96 ms
0
30.7 ms / 9 ms
1
122.8 ms / 37 ms
Mixing-Source
Beep
Phone
Mixing-Level (Main / Mix-Source)
-12 / -2.5 dB
-6 / -6 dB
-3.5 / -9.6 dB
0 /
Beep Frequency
781 Hz
1.56 kHz
Not allow
1.8 kHz
30/35
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