STAC9758 Datasheet, PDF (84/119 Pages) Integrated Device Technology – HIGH-PERFORMANCE 6-CHANNEL AC’97 2.3 CODEC WITH UNIVERSAL JACKS

STAC9758/9759
HIGH-PERFORMANCE 6-CHANNEL AC’97 2.3 CODEC WITH UNIVERSAL JACKS™
PC AUDIO
8.4.8. GPIO Pin Mask Register (52h)
Default: 0000h
D15
D14
D13
D7
D6
D5
RESERVED
D12
D11
RESERVED
D4
D3
GW3
(GPIO3)
D10
D2
GW2
(GPIO2)
D9
D1
GW1
(GPIO1)
D8
D0
GW0
(GPIO0)
Bit(s) Reset Value R/W
Name
Description
15:4
0
RO RESERVED Bit not used, should read back 0
3
0
RW
GW3
0 = GPIO3 interrupt not passed to GPIO_INT slot 12.
1 = GPIO3 interrupt is passed to GPIO_INT slot 12.
2
0
RW
GW2
0 = GPIO2 interrupt not passed to GPIO_INT slot 12.
1 = GPIO2 interrupt is passed to GPIO_INT slot 12.
1
0
RW
GW1
0 = GPIO1 interrupt not passed to GPIO_INT slot 12.
1 = GPIO1 interrupt is passed to GPIO_INT slot 12.
0
0
RW
GW0
0 = GPIO0 interrupt not passed to GPIO_INT slot 12.
1 = GPIO0 interrupt is passed to GPIO_INT slot 12.
8.4.9. GPIO Pin Status Register (54h)
Default: 0000h
D15
D14
D13
D12
D11
D10
D9
D8
RESERVED
D7
D6
D5
D4
D3
D2
D1
D0
RESERVED
GI3
(GPIO3)
GI2
(GPIO2)
GI1
(GPIO1)
GI0
(GPIO0)
Bit(s) Reset Value R/W
Name
Description
15:4
0
RO RESERVED Bit not used, should read back 0
reads back value on GPIO3.
3
x
RW
GI3
writing 0 will clear GPIO3 sticky bit if set and enabled.
writing 1 does nothing.
reads back value on GPIO2.
2
x
RW
GI2
writing 0 will clear GPIO2 sticky bit if set and enabled.
writing 1 does nothing.
reads back value on GPIO1.
1
x
RW
GI1
writing 0 will clear GPIO1 sticky bit if set and enabled.
writing 1 does nothing.
reads back value on GPIO0.
0
x
RW
GI0
writing 0 will clear GPIO0 sticky bit if set and enabled.
writing 1 does nothing.
IDT™
84
HIGH-PERFORMANCE 6-CHANNEL AC’97 2.3 CODEC WITH UNIVERSAL JACKS™
STAC9758/9759
V 1.2 1206