stac9272 Integrated Device Technology, stac9272 Datasheet - Page 193

• Manufacturer Part Number: stac9272
• Description: 10-channel High Definition Audio Codec
• Manufacturer: Integrated Device Technology

IDT™
STAC9271/9272/9273/9274
10-CHANNEL HIGH DEFINITION AUDIO CODEC
6.32. InPort0Vol Node (NID = 0x18)
10-CHANNEL HIGH DEFINITION AUDIO CODEC
6.31.8. VolumeKnob VCSR0
6.32.1. InPort0Vol WCap
[31.:8]
[6.:0]
Bit
[7]
[31.:4]
[2.:0]
Bit
[3]
Set1
Get
Bitfield Name
Get
Volume
Direct
Rsvd
Bitfield Name
Continuous
Table 481. VolumeKnob VCSR0
Table 479. VolumeKnob Cntrl
Rsvd
Table 480. VolumeKnob VCSR0
Rate
Table 482. InPort0Vol WCap
RW
RW
RW
R
IDT CONFIDENTIAL
Verb ID
FE0
7E0
Reset
0x7F
0x0
0x0
Verb ID
F00
RW
RW
RW
193
R
Reserved
Direct = 1 causes the volume control to directly control the
hardware volume of the slave amps. Direct = 0 causes
unsolicited responses to be generated.
Volume, specified in steps of amplifier gain
See bits [7:0] of bitfield table.
Reset
0x0
0x1
0x0
Command Response Format
Command Response Format
Command Verb Format
Command Verb Format
Payload
Reserved
Allow continuous incrementing/
decrementing of the volume knob value.
Volume knob update rate, for continuous
mode and de-bouncing (0.7 = 2.5.20 Hz, in
increments of 2.5 Hz)
Payload
00
09
STAC9271/9272/9273/9274 V 1.0 MARCH2007
Description
Description
See bitfield table.
See bitfield table.
0000_0000h
Response
Response
PC AUDIO