alc885-gr Realtek Semiconductor Corporation, alc885-gr Datasheet - Page 52

• Manufacturer Part Number: alc885-gr
• Description: 7.1+2 Channel High-performance Hda Codec With Content Protection
• Manufacturer: Realtek Semiconductor Corporation

8.1.16. Parameter – Volume Knob Capabilities (Verb ID=F00h,
8.2. Verb – Get Connection Select Control (Verb ID=F01h)
7.1+2 Channel High-Performance HDA Codec
With Content Protection
Codec Response Format for NID=21h (Volume Control Knob)
Note: The Volume Control knob (NID=21h) supports this parameter.
Get Command Format
Codec Response for Analog Port-A/B/C/D/E/F/G/H (NID=14h~1Bh)
Codec Response for Digital Pin S/PDIF-OUT (NID=1Eh)
Codec Response for other NID
Bit [31:28]
CAd=X
31:8
31:8
31:0
31:8
7:0
7:0
Bit
6:0
Bit
Bit
Bit
7
Parameter ID=13h)
Table 44. Parameter – Volume Knob Capabilities (Verb ID=F00h, Parameter ID=13h)
Node ID=Xh
Bit [27:20]
Reserved. Read as 0s
Delta. Read as 0
Connection Index current settings (Default value is 00h)
Connection Index current settings (Default value is 00h)
Description
0: Software will not modify the volume in Volume Control Knob
1: Software can write a base volume to the Volume Control Knob
NumSteps
The total number of steps in the range of the Volume Control Knob (NID=21h), response=0x20.
Description
0’s
Description
0’s
Description
Not supported (returns 00000000h)
00h: Sum Widget NID=0Ch
01h: Sum Widget NID=0Dh
02h: Sum Widget NID=0Eh
03h: Sum Widget NID=0Fh
04h: Sum Widget NID=26h
Other: Reserved
00h: Digital Converter (S/PDIF-OUT) NID=06h
Other: Reserved
Table 45. Verb – Get Connection Select Control (Verb ID=F01h)
Verb ID=F01h
Bit [19:8]
Payload Bit [7:0]
44
0’s
Bit[7:0] are Connection Index
Codec Response Format
Response [31:0]
ALC885 Series
Datasheet
Rev. 1.1