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8175 N/B MAINTENANCE
8175 N/B MAINTENANCE
1.3.8 ICH2 GPI/O Pin Define
Pin Name
Signal Name
Power
Type
During
PCIRST#
Immediately After
PCIRST#
S1
S3
S4/S5
Description
GPIO0
PULL-UP
+3.3VS
I
PC/PCI DEVICE
DRIVEN
GPIO1
PULL-UP
+3.3VS
I
PC/PCI DEVICE
DRIVEN
GPIO2
PULL-UP
+3.3VS
X
X
X
X
X
X
X
GPIO3
PULL-UP
+3.3VS
I
HIGH-Z
HIGH-Z
HIGH-Z
GPIO4
PULL-UP
+3.3VS
I
HIGH-Z
HIGH-Z
HIGH-Z
GPIO6
PULL-UP
+3.3VS
I
MAIN I/O
GPIO7
PULL-UP
+3.3VS
I
GPIO8
-SCI
+3.3VA
I
ACPIMODE-SCI
GPIO11
PULL-UP
+3.3VA
I
HIGH-Z
HIGH-Z
DEFINED DEFINED DEFINED
GPIO12
-EXTSMI
+3.3VA
I
DOS MODE -SMI
GPIO13
PULL-UP
+3.3VA
I
GPIO16
TP
+3.3VS
O
HIGH-Z
HI
HI
OFF
OFF
GPIO17
PULL-UP
+3.3VS
O
HIGH-Z
HI
HI
OFF
OFF
GPIO18
PULL-UP
+3.3VS
O
HI
DEFINED
OFF
OFF
GPIO19
-ENABKL_MASK
+3.3VS
O
HI
HI
DEFINED
OFF
OFF
MASK ENABLE
GPIO20
-CDROM3.3VS
O
HI
HI
DEFINED
OFF
OFF
Control CDROM Power on
GPIO21
-HDD_PWRON
+3.3VS
O
HI
HI
DEFINED
OFF
OFF
Control HDD Power on
GPIO22
DRAMENA
+3.3VS
O
HIGH-Z
HIGH-Z
DEFINED
OFF
OFF
DRAM Data select
GPIO23
PULL-UP
+3.3VS
OD
LOW
LOW
DEFINED
OFF
OFF
GPIO24
-1394WR
+3.3VA
O
HIGH-Z
HI
DEFINED DEFINED DEFINED
1394EEPROM R/W
GPIO25
-PCIRST_MSK
+3.3VA
O
HIGH-Z
HI
DEFINED DEFINED DEFINED
MASK PCIRST
GPIO27
-GATE1394
+3.3VA
O
HIGH-Z
HI
DEFINED DEFINED DEFINED
RST CARD BOARD
GPIO28
SPK_OFF
+3.3VA
O
HIGH-Z
HI
DEFINED DEFINED DEFINED
OFF SPEAKER
