COM-HPC-ALT User’s Guide PICMG COM-HPC R1.0
Page 25 Copyright © 2023 ADLINK Technology, Inc.
Indicates system is in Suspend to Disk (S4) or Soft Off (S5) state.
Active low output.
32.768 kHz +/- 100 ppm clock used by Carrier peripherals such as M.2
cards in their low power modes.
PCI Express wake up signal.
General purpose wake up signal. May be used to implement wake-up
on PS2 keyboard or mouse activity.
Indicates that external battery is low.
This port provides a battery-low signal to the Module for orderly
transitioning to power saving or power cut-off ACPI modes.
Tamper or Intrusion detection line on VCC_RTC power well. Carrier
hardware pulls this low on a Tamper event.
This is a buffered copy of the internal Module RSMRST# (Resume
Reset, active low) signal. The internal Module RSMRST# signal is an
input to the chipset or SOC and when it transitions from low to high it
indicates that the suspend well power rails are stable.
USB devices on the Carrier that are to be active in S5 / S3 / S0 should
not have their 5V supply applied before RSMRST_OUT# goes high.
RSMRST_OUT# shall be a 3.3V CMOS Module output, active in all
4.3.11 Thermal Protection
Input from off-Module temp sensor indicating an
over-temp situation.
Active low output indicating that the CPU has entered
thermal shutdown.
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