Seco COMe-C55-CT6 User Manual page 46

Com express type 6 module with the intel 8 th generation core and celeron 4000 cpus

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module is going to enter in one of possible ACPI low-power states.

SUS_S3#: S3 status output, active low +3.3V_ALW electrical voltage signal with 100kΩ pull-down resistor. This signal must be used, on the carrier board, to shut

off the power supply to all the devices that must become inactive during S3 (Suspend to RAM) power state.

S4#: S4 status output, active low +3.3V_ALW electrical voltage signal with 100kΩ pull-down resistor. This signal must be used, on the carrier board, to shut off the

power supply to all the devices that must become inactive during S4 (Suspend to Disk) power state.

SUS_S5#: S5 status output, active low +3.3V_ALW electrical voltage signal. This signal is used, on the carrier board, to shut off the power supply to all the devices

that must become inactive only during S5 (Soft Off) power state.

WAKE0#: PCI Express Wake Input, active low +3.3V_ALW electrical voltage signal with 1kΩ pull-up resistor. This signal can be driven low, on the carrier board, to

report that a Wake-up event related to PCI Express has occurred, and consequently the module must turn itself on. It can be left unconnected if not used.

WAKE1#: General Purpose Wake Input, active low +3.3V_ALW electrical voltage signal with 2k2Ω pull-up resistor. It can be driven low, on the carrier board, to report

that a general Wake-up event has occurred, and consequently the module must turn itself on. It can be left unconnected if not used. While WAKE0# signal is

managed directly by the Soc's embedded PCH, WAKE1#signal is managed by the Embedded microcontroller.

BATLOW#: Battery Low Input, active low, +3.3V_ALW voltage signal with 10kΩ pull-up resistor. This signal can be driven on the carrier board to signal that the

system battery is low, or that some battery-related event has occurred. It can be left unconnected if not used.

LID# *: LID button Input, active low +3.3V_ALW electrical level signal, with 10kΩ pull-up resistor. This signal can be driven, using a LID Switch on the carrier board,

to trigger the transition of the module from Working to Sleep status, or vice versa. It can be left unconnected if not used on the carrier board.

SLEEP# *: Sleep button Input, active low +3.3V_ALW electrical level signal, with 10kΩ pull-up resistor. This signal can be driven, using a pushbutton on the carrier

board, to trigger the transition of the module from Working to Sleep status, or vice versa. It can be left unconnected if not used on the carrier board.

Note: In COM Express

specifications prior to Rel. 2.0, the pins dedicated to LID# and SLEEP# inputs were dedicated to +12V

been added on LID# and SLEEP# so that they are +12V Tolerant. This has been made in order to prevent damages to the module, in case it is inserted in carrier

board not designed for Type 6.

3.2.5.17 SMBus signals

This interface is managed by the Soc's embedded PCH.

Signals involved are the following:

SMB_CK: SM Bus control clock line for System Management. Bidirectional signal, electrical level +3.3V_ALW with a 2k2Ω pull-up resistor.

SMB_DAT: SM Bus control data line for System Management. Bidirectional signal, electrical level +3.3V_ALW with a 2k2Ω pull-up resistor.

SMB_ALERT#: SM Bus Alert line for System Management. Input signal, electrical level +3.3V_ALW with a 1kΩ pull-up resistor. Any device place on the SM Bus can

drive this signal low to signal an event on the bus itself.

COMe-C55-CT6

power rail. Protection circuitry has

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