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Intel Q9400S Data Sheet - Page 98

Variable Speed Fan

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Boxed Processor Specifications 7.4.2 Variable Speed Fan If the boxed processor fan heatsink 4-pin connector is connected to a 3-pin motherboard header it will operate as follows: The boxed processor fan will operate at different speeds over a short range of internal chassis temperatures. This allows the processor fan to operate at a lower speed and noise level, while internal chassis temperatures are low. If internal chassis temperature increases beyond a lower set point, the fan speed will rise linearly with the internal temperature until the higher set point is reached. At that point, the fan speed is at its maximum. As fan speed increases, so does fan noise levels. Systems should be designed to provide adequate air around the boxed processor fan heatsink that remains cooler then lower set point. These set points, represented in Figure 7-9 and Table 7-2, can vary by a few degrees from fan heatsink to fan heatsink. The internal chassis temperature should be kept below 38 ºC. Meeting the processor's temperature specification (see Chapter 5) is the responsibility of the system integrator. The motherboard must supply a constant +12 V to the processor's power header to ensure proper operation of the variable speed fan for the boxed processor. Refer to Table 7-1 for the specific requirements. Figure 7-9. Boxed Processor Fan Heatsink Set Points Increasing Fan Speed & Noise Higher Set Point Highest Noise Level Lower Set Point Lowest Noise Level X Y Z Internal Chassis Temperature (Degrees C) Table 7-2. Fan Heatsink Power and Signal Specifications Boxed Processor Fan Heatsink Set Point (°C) Boxed Processor Fan Speed Notes X ≤ 30 When the internal chassis temperature is below or equal to this set point, the fan operates at its lowest speed. Recommended 1 maximum internal chassis temperature for nominal operating environment. Y = 35 When the internal chassis temperature is at this point, the fan operates between its lowest and highest speeds. Recommended maximum internal chassis temperature for worst-case operating - environment. Z ≥ 39 When the internal chassis temperature is above or equal to this set point, the fan operates at its highest speed. - NOTES: 1. Set point variance is approximately ±1 °C from fan heatsink to fan heatsink. 100 Datasheet

Section	Page
Intel® Core™2 Extreme Processor QX9000D Series, Intel® Core™2 Quad Processor Q9000D, Q9000SD, Q8000D, and Q8000SD Series	1
Contents	3
Figures	5
Tables	6
Revision History	7
Intel® Core™2 Extreme Processor QX9000 Series and Intel® Core™2 Quad Processor Q9000, Q9000S, Q8000, Q8000S Series Features	9
1 Introduction	11
1.1 Terminology	12
1.1.1 Processor Terminology Definitions	12
1.2 References	14
2 Electrical Specifications	15
2.1 Power and Ground Lands	15
2.2 Decoupling Guidelines	15
2.2.1 VCC Decoupling	15
2.2.2 Vtt Decoupling	15
2.2.3 FSB Decoupling	16
2.3 Voltage Identification	16
2.4 Reserved, Unused, and TESTHI Signals	18
2.5 Power Segment Identifier (PSID)	18
2.6 Voltage and Current Specification	19
2.6.1 Absolute Maximum and Minimum Ratings	19
2.6.2 DC Voltage and Current Specification	20
2.6.3 VCC Overshoot	25
2.6.4 Die Voltage Validation	25
2.7 Signaling Specifications	26
2.7.1 FSB Signal Groups	26
2.7.2 CMOS and Open Drain Signals	28
2.7.3 Processor DC Specifications	28
2.7.3.1 Platform Environment Control Interface (PECI) DC Specifications	29
2.7.3.2 GTL+ Front Side Bus Specifications	30
2.8 Clock Specifications	31
2.8.1 Front Side Bus Clock (BCLK[1:0]) and Processor Clocking	31
2.8.2 FSB Frequency Select Signals (BSEL[2:0])	32
2.8.3 Phase Lock Loop (PLL) and Filter	32
2.8.4 BCLK[1:0] Specifications	32
3 Package Mechanical Specifications	35
3.1 Package Mechanical Drawing	35
3.2 Processor Component Keep-Out Zones	39
3.3 Package Loading Specifications	39
3.4 Package Handling Guidelines	39
3.5 Package Insertion Specifications	40
3.6 Processor Mass Specification	40
3.7 Processor Materials	40
3.8 Processor Markings	40
4 Land Listing and Signal Descriptions	43
4.1 Processor Land Assignments	43
4.2 Alphabetical Signals Reference	64
5 Thermal Specifications and Design Considerations	75
5.1 Processor Thermal Specifications	75
5.1.1 Thermal Specifications	75
5.1.2 Thermal Metrology	81
5.2 Processor Thermal Features	81
5.2.1 Thermal Monitor	81
5.2.2 Thermal Monitor 2	82
5.2.3 On-Demand Mode	83
5.2.4 PROCHOT# Signal	84
5.2.5 THERMTRIP# Signal	84
5.3 Platform Environment Control Interface (PECI)	85
5.3.1 Introduction	85
5.3.1.1 TCONTROL and TCC activation on PECI-Based Systems	85
5.3.2 PECI Specifications	86
5.3.2.1 PECI Device Address	86
5.3.2.2 PECI Command Support	86
5.3.2.3 PECI Fault Handling Requirements	86
5.3.2.4 PECI GetTemp0() Error Code Support	86
6 Features	87
6.1 Power-On Configuration Options	87
6.2 Clock Control and Low Power States	87
6.2.1 Normal State	88
6.2.2 HALT and Extended HALT Powerdown States	88
6.2.2.1 HALT Powerdown State	88
6.2.2.2 Extended HALT Powerdown State	89
6.2.3 Stop Grant and Extended Stop Grant States	89
6.2.3.1 Stop-Grant State	89
6.2.3.2 Extended Stop Grant State	90
6.2.4 Extended HALT Snoop State, HALT Snoop State, Extended Stop Grant Snoop State, and Stop Grant Snoop State	90
6.2.4.1 HALT Snoop State, Stop Grant Snoop State	90
6.2.4.2 Extended HALT Snoop State, Extended Stop Grant Snoop State	90
6.2.5 Sleep State	90
6.2.6 Deep Sleep State	91
6.2.7 Deeper Sleep State	91
6.2.8 Enhanced Intel SpeedStep® Technology	92
6.3 Processor Power Status Indicator (PSI) Signal	92
7 Boxed Processor Specifications	93
7.1 Introduction	93
7.2 Mechanical Specifications	94
7.2.1 Boxed Processor Cooling Solution Dimensions	94
7.2.2 Boxed Processor Fan Heatsink Weight	95
7.2.3 Boxed Processor Retention Mechanism and Heatsink Attach Clip Assembly	95
7.3 Electrical Requirements	95
7.3.1 Fan Heatsink Power Supply	95
7.4 Thermal Specifications	97
7.4.1 Boxed Processor Cooling Requirements	97
7.4.2 Variable Speed Fan	98
7.5 Boxed Intel® Core™2 Extreme Processor QX9650 Specifications	99
7.5.1 Boxed Intel® Core™2 Extreme Processor QX9650 Fan Heatsink Weight	100
8 Debug Tools Specifications	103
8.1 Logic Analyzer Interface (LAI)	103
8.1.1 Mechanical Considerations	103

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Boxed Processor Specifications

100

Datasheet

7.4.2

Variable Speed Fan

If the boxed processor fan heatsink 4-pin connector is connected to a 3-pin

motherboard header it will operate as follows:

The boxed processor fan will operate at different speeds over a short range of internal

chassis temperatures. This allows the processor fan to operate at a lower speed and

noise level, while internal chassis temperatures are low. If internal chassis

temperature increases beyond a lower set point, the fan speed will rise linearly with

the internal temperature until the higher set point is reached. At that point, the fan

speed is at its maximum. As fan speed increases, so does fan noise levels. Systems

should be designed to provide adequate air around the boxed processor fan heatsink

that remains cooler then lower set point. These set points, represented in

Figure 7-9

and

Table 7-2

, can vary by a few degrees from fan heatsink to fan heatsink. The

internal chassis temperature should be kept below 38 ºC. Meeting the processor's

temperature specification (see

Chapter 5

) is the responsibility of the system

integrator.

The motherboard must supply a constant +12 V to the processor's power header to

ensure proper operation of the variable speed fan for the boxed processor. Refer to

Table 7-1

for the specific requirements.

Figure 7-9.

Boxed Processor Fan Heatsink Set Points

Table 7-2.

Fan Heatsink Power and Signal Specifications

Boxed Processor

Fan Heatsink Set

Point (°C)

Boxed Processor Fan Speed

Notes

≤

When the internal chassis temperature is below or equal to this

set point, the fan operates at its lowest speed. Recommended

maximum internal chassis temperature for nominal operating

environment.

NOTES:

Set point variance is approximately ±1

C from fan heatsink to fan heatsink.

Y = 35

When the internal chassis temperature is at this point, the fan

operates between its lowest and highest speeds. Recommended

maximum internal chassis temperature for worst-case operating

environment.

≥

When the internal chassis temperature is above or equal to this

set point, the fan operates at its highest speed.

Lower Set Point

Lowest Noise Level

Internal Chassis Temperature (Degrees C)

Increasing Fan

Speed & Noise

Higher Set Point

Highest Noise Level