General Purpose I/O Signals - Intel 6 SERIES CHIPSET - DATASHEET 01-2011 Datasheet

2.24

General Purpose I/O Signals

Notes:
1. GPIO Configuration registers within the Core Well are reset whenever PWROK is
deasserted.
2. GPIO Configuration registers within the Suspend Well are reset when RSMRST# is
asserted, CF9h reset (06h or 0Eh), or SYS_RESET# is asserted. However, CF9h
reset and SYS_RESET# events can be masked from resetting the Suspend well
GPIO by programming appropriate GPIO Reset Select (GPIO_RST_SEL) registers.
3. GPIO24 is an exception to the other GPIO Signals in the Suspend Well and is not
reset by CF9h reset (06h or 0Eh)
Table 2-24. General Purpose I/O Signals (Sheet 1 of 4)
Name Type Tolerance
GPIO75
GPIO74
GPIO73
(Mobile Only)
GPIO72
GPIO[71:70]
GPIO[69:68]
GPIO67
GPIO66
GPIO65
GPIO64
GPIO63
GPIO62
GPIO61
GPIO60
GPIO59
GPIO58
GPIO57
GPIO56
(Mobile Only)
GPIO55
80
Power
Well
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 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 Suspend
I/O 3.3 V Suspend
I/O 3.3 V Suspend
I/O 3.3 V Core
Blink
Default
Capability
Multiplexed with SML1DATA
Native No
(Note 11)
Multiplexed with SML1ALERT#/
PCHHOT#
Native No
(Note 11)
Native No Multiplexed with PCIECLKRQ0#
Mobile: Multiplexed with
Native
BATLOW#.
(Mobile No
Desktop: Unmultiplexed; requires
Only)
pull-up resistor. (Note 4)
Native No Mobile: Used as GPIO only
GPI No Mobile: Used as GPIO only
Native No Multiplexed with CLKOUTFLEX3
Native No Multiplexed with CLKOUTFLEX2
Native No Multiplexed with CLKOUTFLEX1
Native No Multiplexed with CLKOUTFLEX0
Native No Multiplexed with SLP_S5#
Native No Multiplexed with SUSCLK
Native No Multiplexed with SUS_STAT#
Native No Multiplexed with SML0ALERT#
Multiplexed with OC0#
Native No
(Note 11)
Native No Multiplexed with SML1CLK
GPI No Unmultiplexed
Mobile: Multiplexed with
Native No
PEG_B_CLKRQ#
Desktop: Multiplexed with GNT3#
Native No
Mobile: Used as GPIO only
Signal Description
Description
Datasheet