alc272 Realtek Semiconductor Corporation, alc272 Datasheet - Page 61

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

8.23. Verb – Get Pin Sense (Verb ID=F09h)
Returns the Presence Detect status and the impedance of a device attached to the pin.
8.24. Verb – Execute Pin Sense (Verb ID=709h)
4 Channel High Definition Audio Codec
Get Command Format
Codec Response for NID=14h, 15h, 18h, 19h, 1Ah, 1Bh, 21h
Codec Response for other NID
Command Format
‘Payload’ in Command Bit[7:0] (for NID=14h, 15h, 18h, 19h, 1Ah, 1Bh, 21h)
Bit [31:28]
Bit [31:28]
CAd=X
CAd=X
30:0
31:0
7:1
Bit
Bit
Bit
31
0
Description
Presence Detect Status.
0: No device is attached to the pin
1: Device is attached to the pin
Measured Impedance.
The ALC272 does not support hardware impedance detect. This field is read as 0s.
Description
Not Supported (returns 00000000h).
Description
Reserved. Read as 0’s.
Right (Ring) Channel Select.
0: Sense Left Channel (Tip)
1: Sense Right Channel (Ring)
The ALC272 does not support hardware impedance detect and will ignore this control bit.
Node ID=Xh
Node ID=Xh
Bit [27:20]
Bit [27:20]
Table 59. Verb – Execute Pin Sense (Verb ID=709h)
Verb ID= F09h
Verb ID= 709h
Table 58. Verb – Get Pin Sense (Verb ID=F09h)
Bit [19:8]
Bit [19:8]
Payload Bit [7:0]
Payload Bit [7:0]
Right Channel[0]
53
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