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550 参数 Datasheet PDF下载

550图片预览
型号: 550
PDF下载: 下载PDF文件 查看货源
内容描述: 奔腾4处理器,支持超线程技术 [Pentium 4 Processors Supporting Hyper-Threading Technology]
分类和应用:
文件页数/大小: 96 页 / 1585 K
品牌: INTEL [ INTEL ]
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Boxed Processor Specifications  
The fan heatsink outputs a SENSE signal that is an open-collector output that pulses at a rate of  
2 pulses per fan revolution. A baseboard pull-up resistor provides V to match the system board-  
OH  
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 fan heatsink receives a PWM signal from the motherboard from the 4th pin of the connector  
labeled as CONTROL.  
The boxed processor's fan heatsink 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 7-6 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 7-5. Boxed Processor Fan Heatsink Power Cable Connector Description  
Signal  
Pin  
Straight square pin, 4-pin terminal housing with  
polarizing ribs and friction locking ramp.  
1
2
3
4
GND  
+12 V  
0.100" pitch, 0.025" square pin width.  
SENSE  
CONTROL  
Match with straight pin, friction lock header on  
mainboard.  
3 4  
1 2  
Boxed_Proc_PwrCable  
Table 7-1. Fan Heatsink Power and Signal Specifications  
Description  
Min  
Typ  
Max  
Unit  
Notes  
+12 V: 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  
1.1  
1.5  
2.2  
1.0  
A
A
-
Second  
pulses per fan  
revolution  
1
SENSE: SENSE frequency  
2
2, 3  
CONTROL  
21  
25  
28  
kHz  
NOTES:  
1.  
2.  
3.  
Baseboard should pull this pin up to 5V with a resistor.  
Open drain type, pulse width modulated.  
Fan will have pull-up resistor to 4.75 V maximum of 5.25 V.  
92  
Datasheet  
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