Datasheet

Boxed Processor Specifications
96 Datasheet
The boxed processor's fanheat sink 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 fan heatsink power
cable to reach it. The power header identification and location should be documented in
the platform documentation, or on the system board itself. Figure 25 shows the
location of the fan power connector relative to the processor socket. The baseboard
power header should be positioned within 110 mm [4.33 inches] from the center of the
processor socket.
Figure 24. Boxed Processor Fan Heatsink Power Cable Connector Description
Table 32. Fan Heatsink Power and Signal Specifications
Description Min Typ Max Unit Notes
+12 V: 12 volt fan power supply 11.4 12 12.6 V -
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
—
—
—
—
1.2
0.5
2.2
1.0
—
—
—
—
A
A
A
Second
-
SENSE: SENSE frequency — 2 —
pulses per
fan
revolution
1
NOTES:
1. Baseboard should pull this pin up to 5 V with a resistor.
CONTROL 21 25 28 kHz
2, 3
2. Open drain type, pulse width modulated.
3. Fan will have pull-up resistor for this signal to maximum of 5.25 V.
Pin
Signal
12
34
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.