TDA7420 查看數據表（PDF） - STMicroelectronics
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TDA7420 Datasheet PDF : 29 Pages
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TDA7420
SPEAKERS ATTENUATORS
MSB
LSB
D7 D6 D5 D4 D3 D2 D1 D0
LF, LR, RF, RR
-1dB STEPS
0
0
0 0dB
0
0
1 -1dB
0
1
0 -2dB
0
1
1 -3dB
1
0
0 -4B
1
0
1 -5dB
1
1
0 -6dB
1
1
1 -7dB
8dB STEPS
0
0
0
0
0dB
0
0
0
1
-8dB
0
0
1
0
-16dB
0
0
1
1
-24dB
0
1
0
0
-32dB
0
1
0
1
-40dB
0
1
1
0
-48dB
0
1
1
1
-56dB
1
0
0
0
-64dB
1
0
0
1
-72dB
1
1
0
1
0
1
Mute
1
1
1
MUTE & BEEP
MSB
LSB
D7 D6 D5 D4 D3 D2 D1 D0
FUNCTION
1 Soft Mute - FAST SLOPE
0 Soft Mute - Slow Slope
1
Soft Mute OFF
0
Soft Mute ON
0
0
Direct Input Mute ON
1
0
Direct Input Mute OFF
0
0
Radio Mute ON
1
0
Radio Mute OFF
1
Composit Input Enabled
0
Composit Mute Enabled
1
Beep ON - Front
1
Beep ON - Rear
1
VCO OFF
0
VCO ON
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