4.27 General Purpose I/O Signals –Table 4
Name
Type Tolerance
Power
Well
Default
Blink
Capability
Description
GPIO20
I/O
3.3 V
Core
Native
Yes
Multiplexed with PCIECLKRQ2#
GPIO19
I/O
3.3 V
Core
GPI
Yes
Multiplexed with SATA1GP
GPIO18
I/O
3.3 V
Core
Native Yes (Note 6) Multiplexed with PCIECLKRQ1#
GPIO17
I/O
3.3 V
Core
GPI
Yes
Multiplexed with TACH0.
Mobile: Used as GPIO17 only.
GPIO16
I/O
3.3 V
Core
GPI
Yes
Multiplexed with SATA4GP.
GPIO15
I/O
3.3 V
Suspend
GPO
Yes
Unmultiplexed
GPIO14
I/O
3.3 V
Suspend
Native
Yes
Multiplexed with OC7#
GPIO13
I/O
3.3 V
Suspend
GPI
Yes
Multiplexed with HDA_DOCK_RST#
(Mobile Only) (Note 4)
GPIO12
I/O
3.3 V
Suspend
GPI
Yes
Multiplexed with LAN_PHY_PWR_CTRL.
GPIO / Native functionality controlled via
soft strap (Note 9)
GPIO11
I/O
3.3 V
Suspend
Native
Yes
Multiplexed with SMBALERT#. (Note 12)
GPIO10
I/O
3.3 V
Suspend
Native
Yes
Multiplexed with OC6# (Note 12)
GPIO9
I/O
3.3 V
Suspend
Native
Yes
Multiplexed with OC5# (Note 12)
GPIO8
I/O
3.3 V
Suspend
GPO
Yes
Unmultiplexed
GPIO[7:6]
I/O
3.3 V
Core
GPI
Yes
Multiplexed with TACH[3:2].
Mobile: Used as GPIO[7:6] only.
GPIO[5:2] I/OD
5 V
Core
GPI
Yes
Multiplexed with PIRQ[H:E]# (Note 5).
GPIO1
I/O
3.3 V
Core
GPI
Yes
Multiplexed with TACH1. Mobile: Used as
GPIO1 only.
GPIO0
I/O
3.3 V
Core
GPI
Yes
Unmultiplexed