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CPU Power Connector
Pin
Signal
Pin
1
GND
5
2
GND
6
3
GND
7
4
GND
8
The use of wires with section 18 AWG is recommended, in order to ensure the proper amperage of the power section.
JP2 position
+5V_ALW Current monitor selector
Not inserted
Current measurement enabled
Inserted
Current measurement disabled
CN4 is a dedicated 2 position Wire to Board Terminal Block, type Wurth p/n 691210910002.
CN3 position
Power Ok management
1-2
PSU PWR_OK enabled
2-3
PWR_OK always high
status signal for the Module. For normal operation, set the jumper in 1-2 position, otherwise set in 2-3 position to fix its level high and have it always activated.
Diode LED D17 is present on Carrier Board to notify the system has been correctly powered-up, directly driven through an High-Speed Buffer by PWR_OK signal.
Another diode LED D16, complementary to D17, is used to notify the Reset Output from Module to Carrier Board, directly driven through an High-Speed Buffer by
CB_RESET# signal.
CCOMe-C79
CCOMe-C79 - Rev. First Edition: 1.0 - Last Edition: 1.0 - Author: A.R. - Reviewed by E.S. Copyright © 2021 SECO S.p.A.
The board has a CPU Power Connector CN8 providing
only.
CN8
CN8 is a Molex Mini-Fit jr. 8 poles connector, p/n 39-28-1083 or equivalent.
Signal
Mating Connector, MOLEX p/n 39-01-2080 or equivalent, with female crimp
+12V_RUN
terminal MOLEX series 5566.
+12V_RUN
+12V_RUN
+12V_RUN
The power consumption on +5V_ALW can be monitored by removing 2 way jumper
JP2 and inserting a tester set as ammeter.
Alternatively, the consumption on +5V_ALW can be monitored by inserting a tester set as
ammeter between pin 1 and 2 of +5V_ALW Sense Connector CN4.
The COM Express card edge connector has a PWR_OK signal from main power supplied by
Carrier Board to the module, indicating that all the power supplies to the Module are stable within
specified ranges. The Module will typically not power up until the PWR_OK signal goes active.
CN3 is a standard pin header, P2.54mm, 1x3 pin, dedicated to manage this power
12V_RUN for the COM Express module
+
17
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