alc272 Realtek Semiconductor Corporation, alc272 Datasheet - Page 56

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

8.15. Verb – Get Power State (Verb ID=F05h)
The ALC272 is designed to meet Intel’s low-power-state white paper and is ECR HDA-015B compliant
(see section 7.5 Power Management , page 24).
4 Channel High Definition Audio Codec
Get Command Format
Codec Response for NID=01h (Audio Function Group)
Codec Response for NID=02h, 03h, 08h, 09h (Analog Input/Output Converter)
Codec Response for NID=11h, 12h, 14h, 15h, 17h, 18h, 19h, 1Ah, 1Bh, 1Dh, 1Eh, 21h (Pin Widgets)
Codec Response for NID=06h, 10h (Digital Output Converter)
Codec Response for other NID
Bit [31:28]
CAd=X
31:11
31:0
7:6
5:4
3:2
1:0
Bit
Bit
10
9
8
Description
Reserved. Read as 0’s.
PS-SettingsReset.
0: Setting of widgets have been reset during low power state
1: Setting changed from the default were reset to their default during low power state
PS-ClkStopOk.
0: No capability to operate normally with BITCLK stop
1: Operate properly with no BICLK
PS-Error.
No support in ALC272
Reserved. Read as 0’s.
PS-Act. Actual Power State [1:0].
00: Power state is D0
01: Power state is D1
10: Power state is D2
11: Power state is D3
PS-Act indicates the actual power state of the referenced node. For Audio Function Group nodes
(NID=01h), PS-Act is always equal to PS-Set.
Reserved. Read as 0’s.
PS-Set. Set Power State [1:0].
00: Power state is D0
01: Power state is D1
10: Power state is D2
11: Power state is D3
PS-Set controls the current power setting of the referenced node.
Description
Not Supported (returns 00000000h).
Node ID=Xh
Bit [27:20]
Verb ID= F05h
Table 50. Verb – Get Power State (Verb ID=F05h)
Bit [19:8]
Payload Bit [7:0]
48
0’s
Track ID: JATR-1076-21
Codec Response Format
Power State [7:0]
Response [31:0]
Datasheet
ALC272
Rev. 1.0