Boxed Processor Fan Heatsink Weight. Intel AT80571RG0601ML, AT80571RG0561ML

Boxed Processor Specifications

Figure 21.

Overall View Space Requirements for the Boxed Processor

7.2.2

7.2.3

7.3

7.3.1

Boxed Processor Fan Heatsink Weight

The boxed processor fan heatsink will not weigh more than 450 grams. See Chapter 5

and the appropriate Thermal and Mechanical Design Guidelines (see Section 1.2

) for details on the processor weight and heatsink requirements.

Boxed Processor Retention Mechanism and Heatsink

Attach Clip Assembly

The boxed processor thermal solution requires a heatsink attach clip assembly, to secure the processor and fan heatsink in the baseboard socket. The boxed processor will ship with the heatsink attach clip assembly.

Electrical Requirements

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

baseboard. The power cable connector and pinout are shown in Figure 22

. Baseboards

must provide a matched power header to support the boxed processor. Table 29

contains specifications for the input and output signals at the fan heatsink connector.

The fan heatsink outputs a SENSE signal, which is an open- collector output that pulses at a rate of 2 pulses per fan revolution. A baseboard pull-up resistor provides V

OH

to match the system board-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.

Datasheet 93

Boxed Processor Specifications

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 23 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 22.

Boxed Processor Fan Heatsink Power Cable Connector Description

1

2

3

4

Pin Signal

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.

1 2 3 4

Table 29.

Fan Heatsink Power and Signal Specifications

Description

+12 V: 12 volt fan power supply

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

Min

11.4

—

—

—

—

Typ

12

1.2

0.5

2.2

1.0

SENSE: SENSE frequency — 2

CONTROL 21 25

NOTES:

1. Baseboard should pull this pin up to 5 V with a resistor.

2. Open drain type, pulse width modulated.

3. Fan will have pull-up resistor for this signal to maximum of 5.25 V.

Max

12.6

—

—

—

—

—

28

Unit

V

A

A

A

Second pulses per fan revolution kHz

Notes

-

-

1

2, 3

94 Datasheet