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8170 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
GPIO1
6
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_MAS
K
+3.3VS O HI HI DEFINED OFF OFF MASK ENABL
E
GPIO2
0
-CDROM_PWRON +3.3VS 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