STAC9228 Integrated Device Technology, STAC9228 Datasheet - Page 55

• Manufacturer Part Number: STAC9228
• Description: Theater Quality Eight Channel High Definition Audio Codec With Digital Microphone Interface
• Manufacturer: Integrated Device Technology

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