7314 查看數據表（PDF） - STMicroelectronics
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7314 Datasheet PDF : 12 Pages
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TDA7314
Audio Switch
MSB
0
1
LSB
FUNCTION
0
G1
G0
S2
S1
S0
Audio Switch
0
0
Stereo 1
0
1
Stereo 2 (MUTE) (*)
1
0
Stereo 3 (MUTE) (*)
1
1
Stereo 4 (MUTE) (*)
0
LOUDNESS ON
1
LOUDNESS OFF
0
0
0
1
1
0
1
1
+18.75dB
+12.5dB
+6.25dB
0dB
For example to select the stereo 1 input with a gain of +12.5dB, loudness on, the 8 bit string is:
01001000
(*) Stereo 2, 3, 4 are connected internally but not available on pins.
Bass and Treble
0
1
1
0
C3
C2
C1
0
1
1
1
C3
C2
C1
0
0
0
0
0
0
0
0
1
0
0
1
0
1
0
0
1
0
0
1
1
0
1
1
1
1
1
1
1
1
1
1
0
1
1
0
1
0
1
1
0
1
1
0
0
1
0
0
C3 = Sign
For example Bass at -10dB is obtained by the following 8 bit string:
01100010
C0
Bass
C0
Treble
0
-14
1
-12
0
-10
1
-8
0
-6
1
-4
0
-2
1
0
1
0
0
2
1
4
0
6
1
8
0
10
1
12
0
14
10/12
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