alc880 Realtek Semiconductor Corporation, alc880 Datasheet - Page 61

• Manufacturer Part Number: alc880
• Description: 7.1 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.
7.1 Channel High Definition Audio Codec
‘Pin Control’ in command [7:0]: (Pin: FRONT, SURR, CENLFE, SIDESURR, MIC1, MIC2, LINE1, and LINE2)
Get Command Format
Bit [31:28]
Codec Response for NID=0Ah (S/PDIF-IN), 14h~1Bh (Pin Complex), NID=01h for GPIO
Codec Response for other NID
CAd=X
31:8
31:0
2:0
6:4
3:0
Bit
Bit
Bit
7
Node ID=Xh
Bit [27:20]
Reserved. Read as 0’s
Reserved. Read as 0’s
Assigned Tag for Unsolicited Response
Description
VrefEn (Vrefout Enable Control)
000b: Hi-Z (Disabled)
001b: 50% of AVDD
010b: Ground 0V
011b: Reserved
100b: 80% of AVDD
101b: 100% of AVDD
110b~111b: Reserved
Description
Unsolicited Response
0: Disabled
1: Enabled
The tag [3:0] is assigned by software to determine which widget generates unsolicited responses
Description
Not supported (returns 00000000h)
Table 54. Verb – Get Unsolicited Response Control (Verb ID=F08h)
Verb ID= F08h
Bit [19:8]
Payload Bit [7:0]
51
0’s
Track ID: JATR-1076-21
Codec Response Format
Response [31:0]
32-bit Response
ALC880 Series
Datasheet
Rev. 1.4