alc203-lf Realtek Semiconductor Corporation, alc203-lf Datasheet - Page 25

• Manufacturer Part Number: alc203-lf
• Description: Two-channel Ac?97 2.3 Audio Codec
• Manufacturer: Realtek Semiconductor Corporation

6.3 Discovery Descriptor (Page ID-01h)
These registers are defined in Ac’97 2.3 for sensing and analog plug & play functions.
6.3.1 Page -1h, MX62 PCI Sub System ID
Default: FFFFh
6.3.2 Page -1h, MX64 PCI Sub Vendor ID
Default: FFFFh
Two-Channel AC’97 2.3 Audio Codec
10:8
15:0
15:0
Bit
5:2
Bit
Bit
7
6
1
0
Type
Type
Type
R/W
R/W
R/W
R/W
R/W
R/W
NA
NA
Reserved
MIC2 Source
ADC MIC Source
Reserved
S/PDIF-In Enable
S/PDIF-In Monitoring Control
PCI Sub System Vendor ID
This register can be written once only after power on, and is not affected by AC97 cold reset. The system
manufacture’s BIOS can set its own sub-system ID.
The default value FFFFh means this register is implemented and data is not set by BIOS.
PCI Vendor ID
This register can be written once only after power on, and is not affected by AC97 cold reset. The system
manufacture’s BIOS can set its own sub-vendor ID.
The default value FFFFh means this register is implemented and data is not set by BIOS.
0: Recorded PCM data to host is from original ADC
1: Recorded PCM data to host is from S/PDIF-IN
0: MIC2
0: Mono duplicated. (Default)
0: Disable
1: Enable
0: Disable, SPDIFI data is not added into PCM data to DAC. (Default)
1: Enable, SPDIFI data will be added into PCM data to DAC after SPDIFI is locked.
1: (MIC1+MIC2)/2.
1: Stereo.
21
Function
Function
Function
ALC203 DataSheet
Rev1.6