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INTEL82801 Datasheet(PDF) 39 Page - Intel Corporation

Part # INTEL82801
Description  82801AB (ICH0) I/O Controller Hub
PDF  414 Pages
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Manufacturer  INTEL [Intel Corporation]
Direct Link  http://www.intel.com
Logo INTEL - Intel Corporation

INTEL82801 Datasheet(HTML) 39 Page - Intel Corporation

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82801AA and 82801AB Datasheet
2-11
Signal Description
2.16
General Purpose I/O
Table 2-16. General Purpose I/O Signals
Name
Type
Description
GPIO[0:1]
I
Fixed as Input only. Main Power Well. Can instead be used for PC/PCI REQ[A:B]#.
GPIO[2:4]
I
Not implemented
GPIO[5:6]
I
Fixed as Input only. Main Power Well.
GPIO[7]
I
Fixed as Input only. Main Power Well.
GPIO[8]
I
Fixed as Input only. Resume Power Well. Can instead be used for LDRQ[1]#.
GPIO[9]
I
Fixed as Input only. Resume Power Well. Can instead be used for AC_SDIN[1].
GPIO[10]
I
Not implemented.
GPIO[11]
I
Fixed as Input only. Resume Power Well. Can instead be used for SMBALERT#.
GPIO[12:13]
I
Fixed as Input only. Resume Power Well.
GPIO[14:15]
I
Not implemented.
GPIO[16:17]
O
Fixed as Output only. Main Power Well. Can instead be used for PC/PCI
GNT[A:B]#.
GPIO[18:20]
O
Not implemented
GPIO[21:22]
O
Fixed as Output only. Main Power Well
GPIO[23]
OD
Fixed as Output only. Main Power Well.
GPIO[24]
O
Fixed as Output only. Resume Power Well. Can instead be used for SLP_S3#
GPIO[25]
O
Fixed as Output only. Resume Power Well. Can instead be used for SUS_STAT#.
GPIO[26]
O
Fixed as Output only. Resume Power Well.
GPIO[27:28]
OD
Can be Input or Output. Resume Power Well.
GPIO[29:31]
I/O
Not implemented
For the ICH (82801AA), GPIO[1] can alternatively be used for PCI REQ[5]#.
For the ICH (82801AA), this signal can instead be used as PERR#.
For the ICH (82801AA), GPIO[17] can alternatively be used for PCI GNT[5]#
For the ICH (82801AA), this signal can instead be used for SUS_CLK.
For the ICH (82801AA), this signal can instead be used for ALERTCLK and
ALERTDATA.



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