Intel 6 SERIES CHIPSET - DATASHEET 01-2011 Datasheet page 81

Signal Description
Table 2-24. General Purpose I/O Signals (Sheet 2 of 4)
Name Type Tolerance
GPIO54
GPIO53
GPIO52
GPIO51
GPIO50
GPIO49
GPIO48
GPIO47
(Mobile Only)
GPIO46
GPIO45
GPIO44
GPIO[43:
40]
GPIO39
GPIO38
GPIO37
GPIO36
GPIO35
GPIO34
GPIO33
GPIO32
(not available
in Mobile)
GPIO31
Datasheet
Power
Well
I/O 5.0 V Core
I/O 3.3 V Core
I/O 5.0 V Core
I/O 3.3 V Core
I/O 5.0 V Core
I/O 3.3 V Core
I/O 3.3 V Core
I/O 3.3 V Suspend
I/O 3.3 V Suspend
I/O 3.3 V Suspend
I/O 3.3 V Suspend
I/O 3.3 V Suspend
I/O 3.3 V Core
I/O 3.3 V Core
I/O 3.3 V Core
I/O 3.3 V Core
I/O 3.3 V Core
I/O 3.3 V Core
I/O 3.3 V Core
I/O 3.3 V Core
I/O 3.3 V DSW
Blink
Default
Capability
Desktop: Multiplexed with
REQ3#.
Native No
(Note 11)
Mobile: Used as GPIO only
Desktop: Multiplexed with GNT2#
Native No
Mobile: Used as GPIO only
Desktop: Multiplexed with
REQ2#.
Native No
(Note 11)
Mobile: Used as GPIO only
Desktop: Multiplexed with GNT1#
Native No
Mobile: Used as GPIO only
Desktop: Multiplexed with
REQ1#.
Native No
(Note 11)
Mobile: Used as GPIO only
Multiplexed with SATA5GP and
GPI No
TEMP_ALERT#
GPI No Multiplexed with SDATAOUT1.
Native No Multiplexed with PEG_A_CLKRQ#
Native No Multiplexed with PCIECLKRQ7#
Native No Multiplexed with PCIECLKRQ6#
Native No Multiplexed with PCIECLKRQ5#
Multiplexed with OC[4:1]#
Native No
(Note 11)
GPI No Multiplexed with SDATAOUT0.
GPI No Multiplexed with SLOAD.
GPI No Multiplexed with SATA3GP.
GPI No Multiplexed with SATA2GP.
GPO No
GPI No Multiplexed with STP_PCI#
Mobile: Multiplexed with
HDA_DOCK_EN# (Mobile Only)
GPO No
(Note 4)
Desktop: Used as GPIO only
Unmultiplexed (Desktop Only)
GPO,
Native Mobile Only: Used as CLKRUN#,
No
(Mobile unavailable as GPIO
only)
(Note 4)
Multiplexed with
ACPRESENT(Mobile Only) (Note
6)
GPI Yes
Desktop: Used as GPIO31 only.
Unavailable as ACPRESENT
Description
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