STAC9227 Datasheet, PDF (200/237 Pages) Integrated Device Technology – 8-CHANNEL HIGH DEFINITION AUDIO CODEC

STAC9227/9228/9229/9230
8-CHANNEL HIGH DEFINITION AUDIO CODEC
PC AUDIO
Bit
[31:8]
[7]
[6]
[5:0]
Table 476. 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
Tag
RW
0x00
six bits (31:26) of every Unsolicited
Response generated by this node.
6.31.7. VolumeKnob Cntrl
Table 477. VolumeKnob Cntrl Command Verb Format
Verb ID
Payload
Response
Get
F0F
00
See bitfield table.
Set1
70F
See bits [7:0] of bitfield table.
0000_0000h
Bit
[31:8]
[7]
[6:0]
Table 478. VolumeKnob Cntrl Command Response Format
Bitfield Name
RW
Reset
Description
Rsvd
R
0x0
Reserved
Direct
Direct = 1 causes the volume control to
directly control the hardware volume of the
RW
0x0
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
200
IDT CONFIDENTIAL
STAC9227/9228/9229/9230V 1.0 MARCH 2007