alc885-gr Realtek Semiconductor Corporation, alc885-gr Datasheet - Page 72

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alc885-gr

Manufacturer Part Number
alc885-gr
Description
7.1+2 Channel High-performance Hda Codec With Content Protection
Manufacturer
Realtek Semiconductor Corporation
Datasheet

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8.22. Verb – Set Unsolicited Response Control (Verb ID=708h)
Enables 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.
7.1+2 Channel High-Performance HDA Codec
With Content Protection
Set Command Format
Bit [31:28]
‘EnableUnsol’ in Command Bit[7:0] for NID=01h (GPIO in Audio Function Group), 14h~1Bh (Port A to H)
Get Command Format
Bit [31:28]
Codec Response for NID = 14h~1Bh, 1Eh, 1Fh
Codec Response for other NID
CAd=X
CAd=X
31:8
30:0
31:0
6:4
3:0
Bit
Bit
Bit
31
7
Node ID=Xh
Node ID=Xh
Bit [27:20]
Bit [27:20]
Reserved. Read as 0’s
Reserved. Read as 0’s
Presence Detect Status
Measured Impedance
Description
Enable Unsolicited Response
0: Disable
1: Enable
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
0: No device is attached to the pin
1: Device is attached to the pin
The ALC885 does not support hardware impedance detection. This field is read as 0s.
Description
Not supported (returns 00000000h)
Table 64. Verb – Set Unsolicited Response Control (Verb ID=708h)
Verb ID= F09h
Verb ID=708h
Table 65. Verb – Get Pin Sense (Verb ID=F09h)
Bit [19:8]
Bit [19:8]
EnableUnsol [7:0]
Payload Bit [7:0]
Payload Bit [7:0]
64
0’s
Codec Response Format
Codec Response Format
Response [31:0]
Response [31:0]
32-bit Response
0’s for all nodes
ALC885 Series
Datasheet
Rev. 1.1