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參數(shù)資料
| 型號(hào)： | pentium II cpu |
| 廠商： | Intel Corp. |
| 英文描述： | Pentium II Processor AT 450MHZ(工作頻率450兆赫茲奔II處理器) |
| 中文描述： | 奔騰II處理器在450MHz（工作頻率450兆赫茲奔二處理器） |
| 文件頁數(shù)： | 72/84頁 |
| 文件大?。?/td> | 1092K |
| 代理商： | PENTIUM II CPU |
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Pentium
II Processor at 350 MHz, 400 MHz, and 450 MHz
72
Datasheet
6.3
Boxed Processor Requirements
6.3.1
Fan Heatsink Power Supply
The boxed processor's fan heatsink requires a +12 V power supply. A fan power cable will be
shipped with the boxed processor to draw power from a power header on the motherboard. The
power cable connector and pinout are shown in
Figure 47
. Motherboards must provide a matched
power header to support the boxed processor.
Table 39
contains specifications for the input and
output signals at the fan heatsink connector. The cable length will be 7.0 ±0.25 inches. The fan
heatsink outputs a SENSE signal, which is an open-collector output, that pulses at a rate of two
pulses per fan revolution. A motherboard pull-up resistor provides V
OH
to match the motherboard-
mounted fan speed monitor requirements, if applicable. Use of the SENSE signal is optional. If the
SENSE signal is not used, pin 3 of the connector should be tied to GND.
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 motherboard
documentation, or on the motherboard itself.
Figure 48
shows the location of the fan power
connector relative to the 242-contact slot connector. The motherboard power header should be
positioned within 4.75 inches (lateral) of the fan power connector.
Figure 47. Boxed Processor Fan Heatsink Power Cable Connector Description
Table 39. Fan Heatsink Power and Signal Specifications
Description
Min
Typ
Max
+12 V: 12 volt fan power supply
9 V
12 V
13.8 V
I
C
: Fan current draw
100 mA
SENSE: SENSE frequency (motherboard should pull this pin
up to appropriate V
CC
with resistor)
2 pulses per fan revolution
Pin
Signal
Straight square pin, 3-pin terminal housing with
polarizing ribs and friction locking ramp.
0.100" pin pitch, 0.025" square pin width.
Waldom/Molex P/N 22-01-3037 or equivalent.
Match with straight pin, friction lock header on motherboard
Waldom/Molex P/N 22-23-2031, AMP P/N 640456-3,
or equivalent.
1
2
3
GND
+12V
SENSE
000888
1
2
3
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