Kontron mITX-E38 User Manual
Page 27
KTD-N0903-A
Page 25
Internal Connectors
mITX-E38 Users Guide
Fan for SOC and System (Fan SOC – J29, Fan Sys – J28)
7.4
The Fan SOC is used for the connection of the FAN included in active SOC cooler.
The Fan Sys can be used to power, control and monitor fan for chassis ventilation etc.
Signal
Description
PWM
PWM output signal for FAN speed control.
TACHO
Tacho input signal from the fan, for rotation speed supervision RPM (Rotation Per Minute). The
signal shall be generated by an open collector transistor or similar. Onboard is a pull-up
resistor 4K7 to +12V. The signal has to be pulsed and onboard circuit is prepared for two pulses
per rotation.
12V
+12V supply for fan. A maximum of 500mA can be supplied from this pin.
GND
Power Supply GND signal
Header
Pin
Signal
Description
Type
1
GND
Ground
PWR
2
12V
AI
3
TACHO
Tacho signal
I
4
PWM
PWM output
O-3.3
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- CP3003-SA (36 pages)
- CP3002 (38 pages)
- CP3002-RC uEFI (64 pages)
- CP-RIO3-05 (42 pages)
- CP3002-RC (30 pages)
- CP342 (52 pages)
- CP930 (46 pages)
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- CP346 (72 pages)
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- CP6002 (42 pages)