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TDA7409 데이터 시트보기 (PDF) - STMicroelectronics
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TDA7409
CARRADIO-SIGNAL-PROCESSOR
STMicroelectronics
TDA7409 Datasheet PDF : 25 Pages
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TDA7409
2.5.3 Volume
MSB
LSB
D
7
D
6
D
5
D
4
D
3
D
2
D
1
D
0
ATTENUATION
Gain/Attenuation
0
0
0
0
0
0
0 not allow
0
0
0
0
0
0
1 not allow
0
0
0
0
0
1
0 +30.0dB
0
0
0
0
0
1
1 +29.0dB
:
0
0
1
1
1
1
1 +1.0dB
0
1
0
0
0
0
0
0.0dB
0
1
0
0
0
0
1 - 1.0dB
0
1
0
0
0
1
0 - 2.0dB
1:
1
1
0
1
1
1
0 -78.0dB
1
1
0
1
1
1
1 -79.0dB
1
1
1
X
X
X
X Mute
0
Must BE “0”
Note 2:
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.
2.5.4 Treble Programming
MSB
LSB
BASS & TREBLE PROGRAMMING
D
7
D
6
D
5
D
4
D
3
D
2
D
1
D
0
Treble Step
s
0
0
0
0 15dB
0
0
0
1 14dB
0
0
1
0 13dB
0
0
1
1 12dB
0
1
0
0 11dB
0
1
0
1 10dB
0
1
1
0
9dB
0
1
1
1
8dB
1
0
0
0
7dB
1
0
0
1
6dB
1
0
1
0
5dB
1
0
1
1
4dB
1
1
0
0
3dB
1
1
0
1
2dB
1
1
1
0
1dB
1
1
1
1
0dB
Mode
0
Cut
1
Boost
X
0
0
X
0
1
X
1
0
X
1
1
Treble Center Frequency
10KHz
12.5KHz
15KHz
17.5KHz
18/25
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