Boxed Processor Fan Heatsink Power Cable Connector Description; Fan Heatsink Power And Signal Specifications - Intel Quad-Core Xeon 3300 Series Datasheet

Boxed Processor Specifications
Figure 7-5.

Boxed Processor Fan Heatsink Power Cable Connector Description

1 2 3 4
Table 7-1.

Fan Heatsink Power and Signal Specifications

+12V: 12 volt fan power supply
IC:
- Maximum fan steady-state current draw
- Average fan steady-state current draw
- Maximum fan start-up current draw
- Fan start-up current draw maximum
duration
SENSE: SENSE frequency
CONTROL
NOTES:
1. Baseboard should pull this pin up to 5V with a resistor.
2. Open drain type, pulse width modulated.
3. Fan will have pull-up resistor for this signal to maximum of 5.25 V.
Datasheet
Signal
Pin
1 GND
+12 V
2
3 SENSE
CONTROL
4
Description
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.
Min Typ Max
11.4 12 12.6
— 1.2 —
— 0.5 —
— 2.2 —
— 1.0 —
— 2 —
21 25 28
Unit Notes
V -
A
A
-
A
Second
pulses per
1
fan
revolution
2, 3
kHz
95