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Power Ground
PCI-e Graphics Transmitter lane 15+
PCI-e Graphics Transmitter lane 15-
Power Ground
Hot Plug presence detect (needed to enable clock)
Not Connected
3.3.17 FAN Connector
FAN Connector - CN38
Pin
Signal
1
GND
2
FAN_POWER
3
FAN_TACHO_IN
Please refer to chapter 4.1 for considerations about thermal dissipation.
FAN_POWER: +12V_S derived power rail for FAN, managed by PWM signal FAN_PWMOUT coming from COM Express connector.
FAN_TACHO_IN: tachometric input from the fan to the COM Express module
CCOMe-965
CCOMe-965 - Rev. First Edition: 1.0 - Last Edition: 3.0 - Author: S.B. - Reviewed by G.G. Copyright © 2016 SECO S.r.l.
GND
PEG_TX15+
PEG_TX15-
GND
PRSNT#2
RSVD
Depending on the usage model of systems based on CCOMe-965 carrier board, for critical applications/environments it is
available a 3-pin dedicated connector for an external +12V
FAN Connector is a 3-pin single line SMT connector, type MOLEX 22-27-2031 or equivalent, with pinout
shown in the table on the left.
Mating connector: MOLEX 22-01-2035 receptacle with MOLEX 2759 or 4809 KK
Please be aware that the use of an external fan depends strongly on customer's application/installation. Fan Speed control must
be supported by COM Express module through signals FAN_TACHIN and FAN_PWMOUT
B77
A77
PEG_RX14-
B78
A78
GND
B79
A79
GND
B80
A80
PEG_RX15+
B81
A81
PEG_RX15-
B82
A82
GND
FAN.
DC
PCI-e Graphics Receiver lane 14-
Power Ground
Power Ground
PCI-e Graphics Receiver lane 15+
PCI-e Graphics Receiver lane 15-
Power Ground
®
crimp terminals.
49
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