Intel Pentium D 945 HH80553PG0964MN User Manual

106

The boxed processor’s TMA requires a constant +12 V supplied to pin 2 and does not 

support variable voltage control or 3-pin PWM control. 

The power header on the baseboard must be positioned to allow the TMA power cable 

to reach it. The power header identification and location should be documented in the 

platform documentation, or on the system board itself. 

shows the location of 

the fan power connector relative to the processor socket. The baseboard power header 

should be positioned within 4.33 inches from the center of the processor socket.

NOTES:
1.

Baseboard should pull this pin up to 5 V with a resistor.

2.

Open Drain Type, Pulse Width Modulated.

3.

Fan will have a pull-up resistor to 4.75 V, maximum 5.25 V

Pin

Signal

1 2 3 4

1

2

3

4

GND

+12 V

SENSE
CONTROL

Straight square pin, 4-pin terminal housing with
polarizing ribs and friction locking ramp.

0.100" pitch, 0.025" square pin width.

Match with straight pin, friction lock header on
mainboard.

+12V: 12 volt fan power supply

10.2

12

13.8

V

IC: 
Peak Fan current draw
Fan start-up current draw 
Fan start-up current draw maximum duration

—
—
—

1.0

—
—

1.5
2.0
1.0

A
A

Second

SENSE: SENSE frequency

—

2

—

pulses per 

fan 

revolution

1

CONTROL

21

25

28

KHz

2,3