PC4-PRESTO • CompactPCI
®
PlusIO • 4
th
Generation Intel
®
Core™-4xxx Processor
GPIO Usage QM87 PCH
GPIO
Type
Voltage
1)
Function
Description
58
I
+V3.3A
N/A
Not used on PC4 (pulled via resistor to +3.3V)
59
I
+V3.3A
USB_OC0#
USB Front Panel Right Port Overcurrent Detect
60
I
+V3.3A
N/A
Not used on PC4 (pulled via resistor to +3.3V)
61-62
O
+V3.3A
N/A
Not connected on PC4
63
O
+V3.3A
SLP_S5#
Multiplexed with chipset internal function
64
O
+V3.3S
CLKOUT_FLEX1
14.318MHz Clock Source
65-67
O
+V3.3A
N/A
Not connected on PC4
68-71
I
+V3.3S
BOARD_CFG
Board Configuration Jumpers BOARD_CGF[0:3]
72
I
+V3.3A
N/A
Not used on PC4 (pulled via resistor to +3.3V)
73
I
+V3.3A
PCIE_CLK_REQ0#
Ethernet Controller NC1 Clock Request
74-75
I
+V3.3A
N/A
Not used on PC4 (pulled via resistors to +3.3V)
1)
S=Core Voltage (active in state S0 only), A=Standby Voltage
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