W83971D Datasheet, PDF (13/58 Pages) Winbond – AC97 AUDIO CODEC

Preliminary W83971D
6.2 Reset Register (Index 00h)
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Reg#
00h 0
1
1
0
1
1
000000000
Default
0000h
The Reset register is used to configure the hardware to a known state or is used to read the status of
the current hardware configuration. Writing data to this register will set all the mixer registers to their
default values. Reading data from this register will return the ID code for the device.
Register Map: Register Write:
Register Read:
D10~D13:
sets all mixer registers to default value
returns ID code for device
3D stereo enhancement ID
6.3 Stereo Output Control Register (Index 02h)
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 Default
Reg#
02h Mute
ML5 ML4 ML3 ML2 ML1 ML0
MR5 MR4 MR3 MR2 MR1 MR0 8000h
6.3.1 Mute Stereo Output Mute Control
"1" : Mute enabled
"0" : Mute disabled
6.3.2 ML[5:0] Master Output (Left Channel) Volume Control
These six bits select the level of attenuation applied to the Left channel of the Stereo Output signal.
The level of attenuation is programmable from 0dB to -94.5dB in 1.5dB increments, providing a total
of 64 programmable levels.
6.3.3 MR[5:0] Master Output (Right Channel) Volume Control
These six bits select the level of attenuation applied to the Right channel of the Stereo Output signal.
The level of attenuation is programmable from 0dB to -94.5dB in 1.5dB increments, providing a total
of 64 programmable levels.
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Publication Release Date: July 1999
Revision A1