STAC9227 Datasheet, PDF (55/237 Pages) Integrated Device Technology – 8-CHANNEL HIGH DEFINITION AUDIO CODEC

STAC9227/9228/9229/9230
8-CHANNEL HIGH DEFINITION AUDIO CODEC
PC AUDIO
Table 60. AFG GPIODrive Command Response Format
Bit
Bitfield Name
RW
Reset
Description
GPIO2 Drive Mode;
[2]
OD2
RW
0x0
0 = push-pull (drive 0 and 1),
1 = open drain (drive 0, float for 1).
GPIO1 Drive Mode;
[1]
OD1
RW
0x0
0 = push-pull (drive 0 and 1),
1 = open drain (drive 0, float for 1).
GPIO0 Drive Mode;
[0]
OD0
RW
0x0
0 = push-pull (drive 0 and 1),
1 = open drain (drive 0, float for 1).
6.2.25. AFG DMic
Get
Set1
Table 61. AFG DMic Command Verb Format
Verb ID
Payload
FF0
00
7F0
See bits [7:0] of bitfield table.
Response
See bitfield table.
0000_0000h
Bit
[31:4]
[3:2]
[1:0]
Table 62. AFG DMic Command Response Format
Bitfield Name
RW
Reset
Description
Rsvd
R
0x0
Reserved
PhAdj
Selects what phase of the DigMic clock the
data should be latched:
RW
0x0
0 = rising edge
1 = center of high
2 = falling edge
3 = center of low
Rate
Selects the DigMic rate:
0 = 4.704 MHz
RW
0x2
1 = 3.528 MHz
2 = 2.352 MHz
3 = 1.176 MHz
IDT™ 8-CHANNEL HIGH DEFINITION AUDIO CODEC
55
IDT CONFIDENTIAL
STAC9227/9228/9229/9230V 1.0 MARCH 2007