STAC9220 Datasheet, PDF (154/172 Pages) Integrated Device Technology – 8-CHANNEL HIGH DEFINITION AUDIO CODEC

STAC9220/9221/9223
8-CHANNEL HIGH DEFINITION AUDIO CODEC
PC AUDIO
Bit
[31:8]
[7]
[6]
[5:0]
Table 343. VolumeKnob UnsolResp Command Response Format
Bitfield Name
RW
Reset
Description
Rsvd2
R
0x00
Reserved
Allow generation of Unsolicited Responses.
En
RW
0x0
Unsolicited response events occur upon jack-
insertion OR completion of a Jack-Sense cycle.
Rsvd1
R
0x0
Reserved
Software programmable field returned in top six
Tag
RW
0x00
bits (31:26) of every Unsolicited Response
generated by this node.
6.26.6. VolumeKnob Cntrl
Table 344. VolumeKnob Cntrl Command Verb Format
Verb ID
Payload
Get
F0F
00
Set1
70F
See bits [7:0] of bitfield table
Response
See bitfield table
0000_0000h
Bit
[31:8]
[7]
[6:0]
Table 345. VolumeKnob Cntrl Command Response Format
Bitfield Name
RW
Reset
Description
Rsvd
R
0x0
Reserved
Direct
Direct = 1 causes the volume control to directly
RW
0x0
control the hardware volume of the slave amps.
Direct = 0 causes unsolicited responses to be
generated.
Volume
RW
0x7F
Volume, specified in steps of amplifier gain
IDT™
8-CHANNEL HIGH DEFINITION AUDIO CODEC
154
STAC9220/9221/9223
V 0.96 102706