alc272 Realtek Semiconductor Corporation, alc272 Datasheet - Page 60

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

8.21. Verb – Get Unsolicited Response Control (Verb ID=F08h)
Determines whether a widget is enabled to send an unsolicited response. An HDA codec can use an
unsolicited response to inform software of a real-time event.
8.22. Verb – Set Unsolicited Response Control (Verb ID=708h)
Enable a widget to generate an unsolicited response.
4 Channel High Definition Audio Codec
Get Command Format
Codec Response for NID=01h (GPIO), 14h, 15h, 18h~1Bh, 21h (Pin Complex)
Codec Response for other NID
Set Command Format
‘EnableUnsol’ in Command Bit [7:0]
Bit [31:28]
Bit [31:28]
CAd=X
CAd=X
31:8
31:0
31:8
6:4
3:0
5:0
Bit
Bit
Bit
7
7
6
Description
Reserved. Read as 0’s.
Unsolicited Response is Enabled.
0: Disabled
Reserved. Read as 0’s.
Assigned Tag for Unsolicited Response.
The tag[3:0] is assigned by software to determine which widget generates unsolicited responses.
Description
Not Supported (returns 00000000h).
Description
Reserved. Read as 0’s.
Unsolicited Response.
0: Disable
Reserved. Read as 0’s.
Tag for Unsolicited Responses.
Tag[5:0] is defined by software to assign a 6-bit tag for nodes that are enabled to generate unsolicited
responses.
Node ID=Xh
Node ID=Xh
Bit [27:20]
Bit [27:20]
Table 56. Verb – Get Unsolicited Response Control (Verb ID=F08h)
Table 57. Verb – Set Unsolicited Response Control (Verb ID=708h)
Verb ID= F08h
Verb ID=708h
Bit [19:8]
Bit [19:8]
1: Enabled
1: Enable
EnableUnsol [7:0]
Payload Bit [7:0]
Payload Bit [7:0]
52
0’s
Track ID: JATR-1076-21
Codec Response Format
Codec Response Format
Response [31:0]
Response [31:0]
32-bit Response
0’s for all nodes
Datasheet
ALC272
Rev. 1.0