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886LCD/ATX(GV) -/ATXU(GV)
KTD-00647-C
Public User Manual
Date: 2007-02-08 Page
35 of 71
4.13 Fan connectors, CPU FAN, CHASSIS FAN, PWR FAN.
The
CPU FAN (FAN3)
is used for connection of the active cooler for the CPU.
The
CHASSIS FAN
(FAN2)
can be used to power, control and monitor a fan for chassis ventilation etc.
PIN
Signal
Type
Ioh/Iol
Pull
U/D
Note
1
SENSE
-
1K
2
12V_PWM
PWR
-
-
3
GND
PWR
-
-
Signal description:
12V_PWM
+12V supply for fan, can be turned on/off or modulated (PWM) by the chipset.
A maximum of 1000 mA can be supplied from this pin.
SENSE
Tacho signal from the fan for supervision. The signals shall be generated by an open
collector transistor or similar. On board is a pull-up resistor 1K to +5V. The signal has to be
pulses, typically 2 Hz per rotation.
The
PWR FAN (FAN1)
can be used for high power fans.
PIN
Signal
Type
Ioh/Iol
Pull
U/D
Note
1
SENSE
-
1K
2
12V
PWR
-
-
3
GND
PWR
-
-
Signal description:
12V
+12V supply for fan. A maximum of 2000 mA can be supplied from this pin.
SENSE
Tacho signal from the fan for supervision. The signals shall be generated by an open
collector transistor or similar. On board is a pull-up resistor 1K to +5V. The signal has to be
pulses, typically 2 Hz per rotation.