alc268 Realtek Semiconductor Corporation, alc268 Datasheet - Page 56

• Manufacturer Part Number: alc268
• Description: 2+2 Channel High Definition Audio Codec
• Manufacturer: Realtek Semiconductor Corporation

8.22. Verb – Set Unsolicited Response Control (Verb ID=708h)
Enable a widget to generate an unsolicited response.
8.23. Verb – Get Pin Sense (Verb ID=F09h)
Returns the Presence Detect status and the impedance of a device attached to the pin.
2+2 Channel High Definition Audio Codec
Set Command Format
‘EnableUnsol’ in Command Bit[7:0]
For NID=01h (GPIO in Audio Function Group), 14h~16h (port jack detect), 18h~1Bh (port jack detect)
Get Command Format
Codec Response: Pin widget 14h (LINE-OUT), 15h (HP-OUT), 18h (MIC1), 19h (MIC2), 1Ah (LINE1)
Codec Response for other NID
Bit [31:28]
Bit [31:28]
Cad=X
Cad=X
31:8
30:0
6:4
3:0
Bit
Bit
31
31:0
7
Bit
Description
Reserved. Read as 0’s.
Enable Unsolicited Response.
0: Disable
Reserved. Read as 0’s.
Tag for Unsolicited Response. Tag[3:0] is defined by software to assign a 4-bit tag for nodes that are
enabled to generate unsolicited responses.
Description
Presence Detect Status.
0: No device is attached to the pin
Measured Impedance.
Note: The ALC268 does not support impedance sensing. Read as 0’s.
Node ID=Xh
Node ID=Xh
Bit [27:20]
Bit [27:20]
Description
Not Supported (returns 00000000h).
Table 54. Verb – Set Unsolicited Response Control (Verb ID=708h)
Verb ID=F09h
Verb ID=708h
Table 55. Verb – Get Pin Sense (Verb ID=F09h)
Bit [19:8]
Bit [19:8]
EnableUnsol [7:0]
Payload Bit [7:0]
Payload Bit [7:0]
48
0’s
1: Enable
1: Device is attached to the pin
Track ID: JATR-1076-21
Codec Response Format
Codec Response Format
Response [31:0]
Response [31:0]
0’s for all nodes
32-bit Response
ALC268 Series
Datasheet
Rev. 1.3