W83971D Datasheet, PDF (16/58 Pages) Winbond – AC97 AUDIO CODEC

Preliminary W83971D
6.5 PC_BEEP Input Volume Control Register (Index 0Ah)
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 Default
Reg#
0Ah
PV3 PV2 PV1 PV0
0000h
6.5.1 Mute PC Beep Input Mute Control
"1" : Mute enabled
"0" : Mute disabled
6.5.2 PV[3:0] PC Beep Input Volume Control
These four bits select the level of attenuation applied to the PC beep input signal. The level of
attenuation is programmable from 0dB to -45dB in 3dB increments, providing a total of 16
programmable levels. The beep gain is set at 0dB when PV[3:0] = 0h.
6.6 Phone Input Volume Control Register (Index 0Ch)
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 Default
Reg#
0Ch Mute
GN4 GN3 GN2 GN1 GN0 8008h
6.6.1 Mute Phone Input Mute Control
"1" : Mute enabled
"0" : Mute disabled
6.6.2 GN[4:0] PC Phone Input Volume Control
These five bits select the gain applied to the Phone 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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