STAC9220 Datasheet, PDF (42/172 Pages) Integrated Device Technology – 8-CHANNEL HIGH DEFINITION AUDIO CODEC

STAC9220/9221/9223
8-CHANNEL HIGH DEFINITION AUDIO CODEC
PC AUDIO
6.5.10. AFG GPIO Polarity
Table 30. AFG GPIO Polarity Command Verb Format
Verb ID
Payload
Get
FE7
00
Set1
70E7
See bits [7:0] of bitfield table
Response
See bitfield table
0000_0000h
Table 31. AFG GPIO Polarity Command Response Format
Bit
Bitfield Name RW Reset
Description
[31:4]
Rsvd
R
0x0 Reserved
GPIO 3 Input Polarity Control (used in conjunction with GPIOSticky)
and Output Type Control.
When configured as a level-sensitive input:
0 = inverted
1 = not inverted (default)
3
GP3
RW 0x1 When configured as an edge-sensitive input:
0 = falling-edge triggered
1 = rising-edge triggered
When configured as an output:
0 = push-pull (CMOS)
1 = open drain (default)
GPIO 2 Input Polarity Control (used in conjunction with GPIOSticky)
and Output Type Control.
When configured as a level-sensitive input:
0 = inverted
1 = not inverted (default)
2
GP2
RW 0x1 When configured as an edge-sensitive input:
0 = falling-edge triggered
1 = rising-edge triggered
When configured as an output:
0 = push-pull (CMOS)
1 = open drain (default)
IDT™
8-CHANNEL HIGH DEFINITION AUDIO CODEC
42
STAC9220/9221/9223
V 0.96 102706