User Guide • PC1-GROOVE • Core
TM
i7
CompactPCI
®
CPU Board
PC1-GROOVE GPIO Usage PCH QM57
GPIO
Type
Tol.
Function
Description
GPIO 34
O
3.3V
STP_PCI#
Multiplexed with chipset internal function
GPIO 35-37
I
3.3V
HWREV
GPIO 37/36/35
000
001
...
111
PCB Revision
0
1
...
7
GPIO 38
O
3.3V
SLOAD
Serial GPIO Bus LOAD (J2: SATA_SL)
GPIO 39
O
3.3V
SDATAOUT
Serial GPIO Bus DATAOUT (J2: SATA_SC)
GPIO 40
I
3.3V
USB_OC1#
USB Front Panel Lower Port Overcurrent Detect
GPIO 41
O
3.3V
ENABLE_NC3
Enable Ethernet Controller NC3
GPIO 42
O
3.3V
ENABLE_NC4
Enable Ethernet Controller NC4
GPIO 43
I
3.3V
USB_OC4#
USB J-HSE Port #1 Overcurrent Detect
GPIO 44
I
3.3V
N/A
Not used on PC1 (pulled via resistor to +3.3V)
GPIO 45
I
3.3V
WDOGRST
Last Hardware Reset caused by watchdog
GPIO 46
I
3.3V
N/A
Not used on PC1 (pulled via resistor to +3.3V)
GPIO 47
I
3.3V
CPCI_12VOK
Comp12V Present
GPIO 48
I
3.3V
N/A
Not used on PC1 (pulled via resistor to +3.3V)
GPIO 49
I
3.3V
N/A
Not used on PC1 (pulled via resistor to GND)
GPIO 50
I
5V
CPCI_REQ1#
CompactPCI Bus Request Line CPCI_REQ1#
GPIO 51
O
3.3V
CPCI_GNT1#
CompactPCI Bus Grant Line CPCI_GNT1#
GPIO 52
I
5V
CPCI_REQ2#
CompactPCI Bus Request Line CPCI_REQ2#
GPIO 53
O
3.3V
CPCI_GNT2#
CompactPCI Bus Grant Line CPCI_GNT2#
GPIO 54
I
5V
CPCI_REQ3#
CompactPCI Bus Request Line CPCI_REQ3#
GPIO 55
O
3.3V
CPCI_GNT3#
CompactPCI Bus Grant Line CPCI_GNT3#
GPIO 56
I
3.3V
N/A
Not used on PC1 (pulled via resistor to +3.3V)
GPIO 57
O
3.3V
ENABLE_NC2
Enable Ethernet Controller NC2
GPIO 58
I
3.3V
N/A
Not used on PC1 (pulled via resistor to +3.3V)
GPIO 59
I
3.3V
USB_OC0#
USB Front Panel Upper Port Overcurrent Detect
GPIO 60
I
3.3V
N/A
Not used on PC1 (pulled via resistor to +3.3V)
GPIO 61
O
3.3V
N/A
Not used on PC1 (left NC)
GPIO 62
O
3.3V
SUSCLK
Multiplexed with chipset internal function
GPIO 63
O
3.3V
SLP_S5#
Multiplexed with chipset internal function
GPIO 64-67
I
3.3V
BOARD_CFG
Board Configuration Jumpers
GPIO68-71
N/A
N/A
N/A
Not implemented in PCH QM57
GPIO 72
I
3.3V
N/A
Not used on PC1 (pulled via resistor to +3.3V)
GPIO 73
I
3.3V
NC1_CLKREQ#
Multiplexed with chipset internal function
GPIO 74
I
3.3V
N/A
Not used on PC1 (pulled via resistor to +3.3V)
GPIO 75
I
3.3V
N/A
Not used on PC1 (pulled via resistor to +3.3V)
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