COM Express Interfaces
Signal Pin Description I/O Comment
SUS_S5# A24 S5 Sleep Control signal indicating that the system
resides in S5 State (Soft Off).
O 3.3V
Suspend
CMOS
WAKE0# B66 PCI Express wake-up event signal. I 3.3V Suspend
CMOS
WAKE1# B67 General purpose wake-up signal. I 3.3V Suspend
CMOS
BATLOW# A27 Battery low input. This signal may be driven low by
external circuitry to signal that the system battery is
low. It also can be used to signal some other external
power management event.
I 3.3V Suspend
CMOS
PICMG
®
COM Express
®
Carrier Board Design Guide Rev. 2.0 / December 6, 2013
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