Ampro COM 830, Reference Manual

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Chapter 3 Signals and Pinout Tables
COM 830 Reference Manual 35
SUS_S3# Indicates system is in Suspend to RAM state.
Active low output. Also known as "PS_ON"
and can be used to control an ATX power
supply. O 3.3VSB PU 10k
3.3VSB
SUS_S4# Indicates system is in Suspend to Disk state.
Active low output. O 3.3VSB PU 10k
3.3VSB Not
supported
SUS_S5# Indicates system is in Soft Off state. O 3.3VSB PU 10k
3.3VSB
WAKE0# PCI Express wake up signal. I 3.3VSB PU 10k
3.3VSB
WAKE1# General purpose wake up signal. May be used
to implement wake-up on PS/2 keyboard or
mouse activity. I 3.3VSB PU 10k
3.3VSB
BATLOW# Battery low input. This signal may be driven
low by external circuitry to signal that the
system battery is low, or may be used to signal
some other external power-management event. I 3.3VSB PU 10k
3.3VSB
THRM# Input from off-module temp sensor indicating
an over-temp situation. I 3.3V PU 10k
3.3V
THERMTRIP
# Active low output indicating that the CPU has
entered thermal shutdown. O 3.3V PU 10k
3.3V
SMB_CK System Management Bus bidirectional clock
line. Power sourced through 5V standby rail
and main power rails. I/O
3.3VSB PU 2k2
3.3VSB
SMB_DAT# System Management Bus bidirectional data
line. Power sourced through 5V standby rail
and main power rails. I/O
3.3VSB PU 2k2
3.3VSB
SMB_ALERT
# System Management Bus Alert – active low
input can be used to generate an SMI# (System
Management Interrupt) or to wake the system.
Power sourced through 5V standby rail and
main power rails. I 3.3VSB PU 10k
3.3VSB
Table 3-15. Power and GND Signal Descriptions
Signal Description I/O PU/
PD Comment
VCC_12V Primary power input: +12V nominal. All
available VCC_12V pins on the connector(s)
shall be used. P
VCC_5V_SBY Standby power input: +5.0V nominal. If
VCC5_SBY is used, all available
VCC_5V_SBY pins on the connector(s) shall
be used. Only used for standby and suspend
functions. May be left unconnected if these
functions are not used in the system design. P
Table 3-14. Power and System Management Signal Descriptions (Continued)