Datasheet 81
Signal Description
GPIO54 I/O 5.0 V Core Native No
Desktop: Multiplexed with
REQ3#.
(Note 11)
Mobile: Used as GPIO only
GPIO53 I/O 3.3 V Core Native No
Desktop: Multiplexed with GNT2#
Mobile: Used as GPIO only
GPIO52 I/O 5.0 V Core Native No
Desktop: Multiplexed with
REQ2#.
(Note 11)
Mobile: Used as GPIO only
GPIO51 I/O 3.3 V Core Native No
Desktop: Multiplexed with GNT1#
Mobile: Used as GPIO only
GPIO50 I/O 5.0 V Core Native No
Desktop: Multiplexed with
REQ1#.
(Note 11)
Mobile: Used as GPIO only
GPIO49 I/O 3.3 V Core GPI No
Multiplexed with SATA5GP and
TEMP_ALERT#
GPIO48 I/O 3.3 V Core GPI No Multiplexed with SDATAOUT1.
GPIO47
(Mobile Only)
I/O 3.3 V Suspend Native No Multiplexed with PEG_A_CLKRQ#
GPIO46 I/O 3.3 V Suspend Native No Multiplexed with PCIECLKRQ7#
GPIO45 I/O 3.3 V Suspend Native No Multiplexed with PCIECLKRQ6#
GPIO44 I/O 3.3 V Suspend Native No Multiplexed with PCIECLKRQ5#
GPIO[43:
40]
I/O 3.3 V Suspend Native No
Multiplexed with OC[4:1]#
(Note 11)
GPIO39 I/O 3.3 V Core GPI No Multiplexed with SDATAOUT0.
GPIO38 I/O 3.3 V Core GPI No Multiplexed with SLOAD.
GPIO37 I/O 3.3 V Core GPI No Multiplexed with SATA3GP.
GPIO36 I/O 3.3 V Core GPI No Multiplexed with SATA2GP.
GPIO35 I/O 3.3 V Core GPO No
GPIO34 I/O 3.3 V Core GPI No Multiplexed with STP_PCI#
GPIO33 I/O 3.3 V Core GPO No
Mobile: Multiplexed with
HDA_DOCK_EN# (Mobile Only)
(Note 4)
Desktop: Used as GPIO only
GPIO32
(not available
in Mobile)
I/O 3.3 V Core
GPO,
Native
(Mobile
only)
No
Unmultiplexed (Desktop Only)
Mobile Only: Used as CLKRUN#,
unavailable as GPIO
(Note 4)
GPIO31 I/O 3.3 V DSW GPI Yes
Multiplexed with
ACPRESENT(Mobile Only) (Note
6)
Desktop: Used as GPIO31 only.
Unavailable as ACPRESENT
Table 2-24. General Purpose I/O Signals (Sheet 2 of 4)
Name Type Tolerance
Power
Well
Default
Blink
Capability
Description
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