STAC9227 Datasheet, PDF (52/237 Pages) Integrated Device Technology – 8-CHANNEL HIGH DEFINITION AUDIO CODEC

STAC9227/9228/9229/9230
8-CHANNEL HIGH DEFINITION AUDIO CODEC
PC AUDIO
Table 54. AFG Sply Command Response Format
Bit
Bitfield Name
RW
Reset
Description
0 = low-level SPDIF Input (special buffer for
[4]
PinLvl
RW
0x1
low level signals)
1 = standard SPDIF Input (for high level
signals)
Supply Override Control. See Table below:
[0] = invert ADC supply;
[3:0]
SplyOvr
RW
0x0
[1] = invert DAC supply;
[2] = supply value;
[3] = supply override enable
6.2.22. AFG DACMode
Get
Set1
Table 55. AFG DACMode Command Verb Format
Verb ID
Payload
FEB
00
7EB
See bits [7:0] of bitfield table.
Response
See bitfield table.
0000_0000h
Bit
[31:7]
[6]
[5]
[4]
[3:0]
Table 56. AFG DACMode Command Response Format
Bitfield Name
RW
Reset
Description
Rsvd2
R
0x0
Reserved
ADCMixDAC
RW
0x0
Enable mixing of ADC with DAC signal (for
karaoke)
FadeFast
RW
0x0
Gain ramps at the maximum rate
FadeLog
RW
0x0
Gain ramping is dB linear instead of voltage
linear over time
Rsvd
R
0x0
Reserved
6.2.23. AFG GPIOPlrty
Get
Set1
Table 57. AFG GPIOPlrty Command Verb Format
Verb ID
Payload
FEE
00
7EE
See bits [7:0] of bitfield table.
Response
See bitfield table.
0000_0000h
IDT™ 8-CHANNEL HIGH DEFINITION AUDIO CODEC
52
IDT CONFIDENTIAL
STAC9227/9228/9229/9230V 1.0 MARCH 2007