alc658 Realtek Semiconductor Corporation, alc658 Datasheet - Page 30

• Manufacturer Part Number: alc658
• Description: Six-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 and play functions.
6.3.1.
Default: FFFFh
6.3.2.
Default: FFFFh
Six-Channel AC’97 2.3 Audio Codec
15:0
15:0
Bit
Bit
Bit
2
1
0
Type
Type
R/W
MX62 PCI Sub System ID
Type
R/W
MX64 PCI Sub Vendor ID
R/W
R/W
R/W
Function
Function
PCI Vendor ID
This register can be written only once after power on, and is not affected by a 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 the BIOS.
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 the BIOS.
Function
0: Disable, S/PDIF-IN FIFO will keep the last valid data (Default)
1: Enable, S/PDIF-IN FIFO will catch the S/PDIF-In data in spite of the V bit
SDATA-IN Slot 6 Source
0: 2
1: 1
SDATA-IN Slot 3/4 Source (when MX6A.11=0)
0: 1
1: 2
Surround Output Source.
0: S-OUT is the real surround output. (default)
1: S-OUT is the duplicated output of LINE-OUT
nd
st
st
nd
stereo ADC Left Channel
stereo ADC (Default)
stereo ADC Left Channel (Default)
stereo ADC
Table 40. MX62 PCI Sub System ID
Table 41. MX64 PCI Sub Vendor ID
26
Datasheet
ALC658
Rev. 1.3