參數(shù)資料
型號(hào)： RK80530KZ017512
英文描述： MICROPROCESSOR|32-BIT|CMOS|PGA|370PIN|CERAMIC
中文描述： 微處理器| 32位|的CMOS |美巡賽| 370PIN |陶瓷
文件頁(yè)數(shù)： 74/86頁(yè)
文件大小： 882K
代理商： RK80530KZ017512
74
Datasheet
Intel
Pentium
III Processor with 512KB L2 Cache at 1.13GHz to 1.40GHz
tabs in a way that interferes with the installation of the boxed processor thermal cooling solution
Figure 24
and
Figure 25
show the REQUIRED keepout dimensions for the boxed processor
thermal solution.
6.3
Electrical Requirements for the Boxed Intel Pentium III
Processor with 512KB L2 Cache
6.3.1
Electrical Requirements
The boxed processor's fan heatsink requires a +12 V power supply. A fan power cable is attached
to the fan and will draw power from a power header on the motherboard. The power cable
connector and pinout are shown in
Figure 33
. Motherboards must provide a matched power header
to support the boxed processor.
Table 38
contains specifications for the input and output signals at
the fan heatsink connector. The fan heatsink outputs a SENSE signal (an open-collector output)
that pulses at a rate of two pulses per fan revolution. A motherboard pull-up resistor provides VOH
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.
Figure 34
shows the recommended location of the fan
power connector relative to the PGA370 socket. The motherboard power header should be
positioned within 4.00 inches (lateral) of the fan power connector for the FC-PGA2 package.
Figure 33. Boxed Processor Fan Heatsink Power Cable Connector Description
Table 38. Fan Heatsink Power and Signal Specifications
Description
Min
Typ
Max
+12 V: 12 volt fan power supply
10.8 V
12 V
13.2 V
IC: 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
1
2
3
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