Copyright
©
2022
congatec
GmbH
CET0m10
23/58
5.2.5
PWR_OK Signal
The PWR_OK signal is a high-active input from the main power supply to the module and it indicates whether the power is good. Use jumper
X57 to configure the PWR_OK signal.
Table 12 X57 - Module PWR_OK Signal
Pin
Description
1-2
Add 3.3V pull-up with 1 kΩ to PWR_OK signal (default)
3-4
Connect PWR_OK signal from ATX power supply
5-6
Connect PWR_OK signal from onboard DC/DC regulator (only via DC banana jack)
Connector Type
X57: 2.54 mm, 2-pin jumper
5.2.6
Power-Up Control
The module’s SUS_S3# signal controls the ATX power supply control signal (PS_ON#). When the system goes to Suspend to RAM (S3) or
Soft Off (S5), the module’s chipset asserts the ‘SUS_S3#’ signal. Through the use of an inverter, the low active ‘PS_ON#’ signal goes high and
switches off the ATX power supply.
When the system is in a power-down system state, any system wake-up event invokes the module’s chipset to deassert the ‘SUS_S3#’ signal.
With the deassertion, the system transitions to ‘Full-On’ state (S0).
5.2.7
Module Type Detection
The signals TYPE0#, TYPE1#, TYPE2# and TYPE10# indicate the pinout type of the module connected to the carrier board. These pins are either
open (N.C), strapped to ground (GND) or connected to 12 V by the module as shown below.
Table 13 Module Type Detection Pinout Description
TYPE0#
TYPE1#
TYPE2#
TYPE10#
Comment
Module Type 1
X (don't care)
X (don't care)
X (don't care)
12 V/NC
COM Express Specification 1.0/2.0
Module Type 10
X (don't care)
X (don't care)
X (don't care)
47k PD
COM Express Specification 2.0
Module Type 2
N.C
N.C
N.C
12 V/N.C
COM Express Specification 1.0/2.0
X57
2
1
3
5
6
4
