W83971D Datasheet, PDF (21/58 Pages) Winbond – AC97 AUDIO CODEC

Preliminary W83971D
6.12 PCM Output Control Register (Index 18h)
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Reg#
Default
18h Mute
GL4 GL3 GL2 GL1 GL0
GR4 GR3 GR2 GR1 GR0 8808h
6.12.1 Mute Line Input Mute Control
"1" : Mute enabled
"0" : Mute disabled
6.12.2 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 .
6.12.3 GR[4:0] Right Channel Gain Control
These five bits select the gain applied to the RIGHT 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 .
6.13 Record Select Register (Index 1Ah)
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 Default
Reg#
1Ah
SL2 SL1 SL0
SR2 SR1 SR0 0000h
6.13.1 Record Source Select(Left Channel)
SL<2:0>
<000>
<001>
<010>
<011>
<100>
<101>
<110>
<111>
Left Record Source
Mic
CD_L
Video In_L
Aux In_L
Line In_L
Stereo Mix_L
Mono Mix
Phone
Record Source Select(Right Channel)
SR<2:0>
<000>
<001>
<010>
<011>
<100>
<101>
<110>
<111>
Right Record Source
Mic
CD_R
Video In_R
Aux In_R
Line In_R
Stereo Mix_R
Mono Mix
Phone
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Publication Release Date: July 1999
Revision A1