STAC9271 Datasheet, PDF (50/223 Pages) Integrated Device Technology – 10-CHANNEL HIGH DEFINITION AUDIO CODEC

STAC9271/9272/9273/9274
10-CHANNEL HIGH DEFINITION AUDIO CODEC
PC AUDIO
Bit
[31.:7]
[6.:5]
[4]
[3.:0]
Table 55. AFG Sply Command Response Format
Bitfield Name
RW
Reset
Description
Rsvd
R
0x0
Reserved
IBIAS
00 = Normal Current;
RW
0x0
01 = 80% nominal Analog Current;
10 = 120% nominal Analog Current;
11 = 140% nominal Analog Current
PinLvl
0= low-level SPDIF Input (special buffer for low
RW
0x1
level signals)
1= standard SPDIF Input (for high level signals)
SplyOvr
Supply Override Control. See Table below.
[0] = invert ADC supply;
RW
0x0
[1] = invert DAC supply;
[2] = supply value;
[3] = supply override enable
6.2.22. AFG DACMode
Get
Set1
Table 56. 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 57. 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
IDT™ 10-CHANNEL HIGH DEFINITION AUDIO CODEC
50
IDT CONFIDENTIAL
STAC9271/9272/9273/9274 V 1.0 MARCH2007