STAC9227 datasheet(55/237 Pages) IDT

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STAC9227/9228/9229/9230

8-CHANNEL HIGH DEFINITION AUDIO CODEC

PC AUDIO

IDT™

8-CHANNEL HIGH DEFINITION AUDIO CODEC

STAC9227/9228/9229/9230V 1.0 MARCH 2007

IDT CONFIDENTIAL

6.2.25. AFG DMic

[2]

OD2

0x0

GPIO2 Drive Mode;

0 = push-pull (drive 0 and 1),

1 = open drain (drive 0, float for 1).

[1]

OD1

0x0

GPIO1 Drive Mode;

0 = push-pull (drive 0 and 1),

1 = open drain (drive 0, float for 1).

[0]

OD0

0x0

GPIO0 Drive Mode;

0 = push-pull (drive 0 and 1),

1 = open drain (drive 0, float for 1).

Table 61. AFG DMic

Command Verb Format

Verb ID

Payload

Response

Get

FF0

See bitfield table.

Set1

7F0

See bits [7:0] of bitfield table.

0000_0000h

Table 62. AFG DMic

Command Response Format

Bit

Bitfield Name

Reset

Description

[31:4]

Rsvd

0x0

Reserved

[3:2]

PhAdj

0x0

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

[1:0]

Rate

0x2

Selects the DigMic rate:

0 = 4.704 MHz

1 = 3.528 MHz

2 = 2.352 MHz

3 = 1.176 MHz

Table 60. AFG GPIODrive

Command Response Format

Bit

Bitfield Name

Reset

Description

STAC9227 Datasheet(PDF) 55 Page - Integrated Device Technology

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