User Guide • SC4-CONCERTO • CompactPCI
®
Serial CPU Board
GPIO Usage CM238 PCH
GPIO
USAGE
DIR
Function
Description
0
Native
IN
BATLOW#
Not used on SC4 (pulled via resistor to +3.3V)
1
Native
IN
ACPRESENT
Not used on SC4 (pulled via resistor to +3.3V)
2
Native
IN
LAN_WAKE#
Connected to Ethernet Controller NC1 LAN_WAKE#
3
Native
IN
PWRBTN#
Power Button Event, connected to PLD
4
Native
OUT
SLP_S3#
Power Management Signal, connected to PLD
5
Native
OUT
SLP_S4#
Power Management Signal, connected to PLD
6
GPIO
IN
N/A
Not connected on SC4
7
GPIO
OUT
N/A
Not connected on SC4
8
Native
OUT
SUSCLK
Buffer Clock from RTC, connected to a Test Point
9
Native
OUT
SLP_WLAN#
Not connected on SC4
10
Native
OUT
SLP_S5#
Power Management Signal, connected to PLD
11
Native
OUT
ENABLE_NC1
Enable Ethernet Controller NC1
All GPIO groups are sourced by +3.3V supply active in power states S0-S5.
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