alc272 Realtek Semiconductor Corporation, alc272 Datasheet - Page 41

• Manufacturer Part Number: alc272
• Description: 4 Channel High Definition Audio Codec
• Manufacturer: Realtek Semiconductor Corporation

8.1.14.
8.1.15.
8.1.16.
4 Channel High Definition Audio Codec
Codec Response Format
Codec Response Format
Codec Response Format for NID=21h (Volume Control Knob)
Note: The ALC272 does not support volume knob and will respond with 0s to this parameter.
31:16
29:24
23:16
15:8
15:8
31:8
7:1
7:0
6:0
Bit
Bit
Bit
31
30
0
7
Table 35. Parameter – Volume Knob Capabilities (Verb ID=F00h, Parameter ID=13h)
Table 33. Parameter – Processing Capabilities (Verb ID=F00h, Parameter ID=10h)
Parameter – Processing Capabilities
(Verb ID=F00h, Parameter ID=10h)
Parameter – GPIO Capabilities
(Verb ID=F00h, Parameter ID=11h)
Parameter – Volume Knob Capabilities
(Verb ID=F00h, Parameter ID=13h)
Description
Reserved. Read as 0’s.
NumCoeff. Number of Coefficient.
Reserved. Read as 0’s.
Benign.
0: Processing unit is not linear and time invariant
1: Processing unit is linear and time invariant
Description
GPIWake=0. The ALC272 does not support GPIO wake-up function.
GPIUnsol=1. The ALC272 supports GPIO unsolicited response.
Reserved. Read as 0’s.
NumGPIs=00h. No GPI pin is supported.
NumGPOs=00h. No GPO pin is supported.
NumGPIOs=02h. Two GPIO pins are supported.
Description
Reserved. Read as 0’s.
Delta.
0: Software cannot modify the Volume Control Knob volume
1: Software can write a base volume to the Volume Control Knob
NumSteps.
The number of steps in the range of the Volume Control Knob.
Table 34. Parameter – GPIO Capabilities (Verb ID=F00h, Parameter ID=11h)
33
Track ID: JATR-1076-21
Datasheet
ALC272
Rev. 1.0