User Guide • PC1-GROOVE • Core
TM
i7
CompactPCI
®
CPU Board
GPIO Usage
GPIO Usage PCH
PC1-GROOVE GPIO Usage PCH QM57
GPIO
Type
Tol.
Function
Description
GPIO 0
I
3.3V
THRM_ALERT#
Monitoring of processor PROCHOT#
GPIO 1
I
3.3V
EXP_SMI#
Expansion Interface SMI Request (J-EXP Pin 15)
GPIO 2
I
5V
CPCI_INTP
CompactPCI Interrupt Request Line INTP
GPIO 3
I
5V
CPCI_ENUM#
CompactPCI System Enumeration Line ENUM#
GPIO 4
I
5V
CPCI_FAL#
CompactPCI Power Failure Line FAL#
GPIO 5
I
5V
CPCI_DEG#
CompactPCI Power Degeneration Line DEG#
GPIO 6
O
3.3V
CPCI_INTS_EN
Connect SERIRQ to CompactPCI Line INTS
LOW: SERIRQ disconnected from INTS
HIGH: SERIRQ connected to INTS
GPIO 7
I
3.3V
CPCI_SYSEN#
Sense CompactPCI System Slot Enable Line SYSEN#
GPIO 8
O
3.3V
N/A
Not used on PC1 (left NC)
GPIO 9
I
3.3V
USB_OC5#
USB HSE Port #2 Overcurrent Detect
GPIO 10
I
3.3V
USB_OC6#
USB HSE Port #3 or #4 Overcurrent Detect
GPIO 11
I
3.3V
GP_JUMP#
Reset UEFI BIOS Setup to Factory Defaults, Jumper P-GP
GPIO 12
O
3.3V
NC1_ENABLE
Enable Ethernet Controller NC2
GPIO 13
I
3.3V
HM_INT#
Hardware Monitor LM87 Interrupt Line
GPIO 14
I
3.3V
USB_OC7#
USB Front Panel Upper Port Overcurrent Detect
GPIO 15
O
3.3V
N/A
Not used on PC1 (pulled via resistor to +3.3V)
GPIO 16
I
3.3V
N/A
Not used on PC1 (pulled via resistor to +3.3V)
GPIO 17
O
3.3V
CPCI_CLKEN
Enable CompactPCI Clock Buffer
GPIO 18
O
3.3V
GP_LED_RED
General Purpose LED Control (via PLD)
GPIO 19
O
3.3V
PLD_SCL
Local Option Reg Interface (within PLD)
GPIO 20
O
3.3V
SE_SYS_WP
General Purpose Serial EEPROM Write Protection
GPIO 21
O
3.3V
PLD_SDA
Local Option Reg Interface (within PLD)
GPIO 22
O
3.3V
SCLOCK
Serial GPIO Bus CLOCK (J2: SATA_SC)
GPIO 23
I
3.3V
LPC_DRQEXP#
Expansion Interface LPC DMA Request Line
GPIO 24
O
3.3V
USB_POWEN1#
USB Front Panel Upper Port Power Enable
GPIO 25
I
3.3V
N/A
Not used on PC1 (pulled via resistor to +3.3V)
GPIO 26
I
3.3V
N/A
Not used on PC1 (pulled via resistor to +3.3V)
GPIO 27
O
3.3V
USB_POWEN2#
USB Front Panel Lower Port Power Enable
GPIO 28
O
3.3V
CPCI_SMB_EN
Connect SMBus of CPCI IPMB/J-EXP to local SMBus
LOW: IPMB/J-EXP disconnected from SMBus
HIGH: IPMB/J-EXP connected to SMBus
GPIO 29
O
3.3V
SLP_LAN#
Multiplexed with SLP_LAN#
GPIO 30
I
3.3V
SUS_PWR_DN_ACK
Not used on PC1 (pulled via resistor to +3.3V)
GPIO 31
I
3.3V
ACPRESENT
Not used on PC1 (pulled via resistor to +3.3V)
GPIO 32
I/O
3.3V
CLKRUN#
Fixed to chipset internal function
GPIO 33
I
3.3V
MFG_JUMP#
Select Manufacturing Mode Jumper P-MFG
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