W83971D Datasheet, PDF (18/58 Pages) Winbond – AC97 AUDIO CODEC

Preliminary W83971D
6.7 Mic Input Volume Control Register (Index 0Eh)
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 Default
Reg#
0Eh Mute
20dB
GN4 GN3 GN2 GN1 GN0 8008h
6.7.1 Mute Mic Input Mute Control
"1" : Mute enabled
"0" : Mute disabled
6.7.2 20dB Mic Boost Control
"1" :Fixed 20dB gain enabled
"0" : Fixed 20dB gain disabled
6.7.3 GN[4:0] Mic Input Volume Control
These five bits select the gain applied to the Mic Input signal. The gain is programmable from -
34.5dB to 12dB in 1.5dB increments, providing a total of 32 programmable levels.
Please refer to Programmable Input and Output Gain Levels .
6.8 Line Input Control Register (Index 10h)
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 Default
Reg#
10h Mute
GL4 GL3 GL2 GL1 GL0
GR4 GR3 GR2 GR1 GR0 8808h
6.8.1 Mute Line Input Mute Control
"1" : Mute enabled
"0" : Mute disabled
6.8.2 GL[4:0] Left Channel Gain Control
These five bits select the gain applied to the LEFT channel of the Line Input signal. The gain is
programmable from -34.5dB to 12dB in 1.5dB increments, providing a total of 32 programmable
levels.
Please refer to Programmable Input and Output Gain Levels .
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