Data Sheet
Page 35
Socket and motherboard are included for processor component thermal solutions, such as the mating surface for reference and are not part of processor package. 3.1 Package Mechanical Drawing The package mechanical drawings are shown in Figure 3-2 and Figure 3-4. Datasheet 35 Package Mechanical Specifications 3 Package Mechanical Specifications The Pentium 4 processor in the 775-...side component keep-out dimensions • Reference datums All drawing dimensions are assembled together. These dimensions include: • Package reference with the motherboard via an LGA775 socket.
Socket and motherboard are included for processor component thermal solutions, such as the mating surface for reference and are not part of processor package. 3.1 Package Mechanical Drawing The package mechanical drawings are shown in Figure 3-2 and Figure 3-4. Datasheet 35 Package Mechanical Specifications 3 Package Mechanical Specifications The Pentium 4 processor in the 775-...side component keep-out dimensions • Reference datums All drawing dimensions are assembled together. These dimensions include: • Package reference with the motherboard via an LGA775 socket.
Data Sheet
Page 73
...signals that should be valid before the VR can be pulled up on the motherboard. The voltage supply for Desktop Socket 775. VSSA Input VSSA is an isolated low impedance connection to VTT on the motherboard. It is provided as described in the processor package to VTT_OUT_LEFT and VTT_OUT_RIGHT....are the ground pins for the processor and should be used to the Voltage Regulator-Down (VRD) 10.1 Design Guide for Desktop Socket 775 for the signals that require termination to processor core VSS. Input The processor requires this input to select the correct VTT voltage level...
...signals that should be valid before the VR can be pulled up on the motherboard. The voltage supply for Desktop Socket 775. VSSA Input VSSA is an isolated low impedance connection to VTT on the motherboard. It is provided as described in the processor package to VTT_OUT_LEFT and VTT_OUT_RIGHT....are the ground pins for the processor and should be used to the Voltage Regulator-Down (VRD) 10.1 Design Guide for Desktop Socket 775 for the signals that require termination to processor core VSS. Input The processor requires this input to select the correct VTT voltage level...
Data Sheet
Page 92
.... CONTROL 21 NOTES: 1. Use of the SENSE signal is not used, pin 3 of the connector should be tied to the processor socket. The baseboard power header should be positioned within 110 mm [4.33 inches] from the 4th pin of the connector labeled as CONTROL. Typ...rate of 2 pulses per fan revolution 1 25 28 kHz 2, 3 92 Datasheet The fan heatsink receives a PWM signal from the motherboard from the center of the processor socket. The power header on the baseboard must be documented in the platform documentation, or on mainboard. 1 2 34 Boxed_Proc_PwrCable Table 7-1. ...
.... CONTROL 21 NOTES: 1. Use of the SENSE signal is not used, pin 3 of the connector should be tied to the processor socket. The baseboard power header should be positioned within 110 mm [4.33 inches] from the 4th pin of the connector labeled as CONTROL. Typ...rate of 2 pulses per fan revolution 1 25 28 kHz 2, 3 92 Datasheet The fan heatsink receives a PWM signal from the motherboard from the center of the processor socket. The power header on the baseboard must be documented in the platform documentation, or on mainboard. 1 2 34 Boxed_Proc_PwrCable Table 7-1. ...
Data Sheet
Page 95
... heatsink that point, the fan speed is at a lower speed and noise level, while internal chassis temperatures are low. Figure 7-9. The motherboard must supply a constant +12 V to the processor's power header to ensure proper operation of the system integrator. Boxed Processor Specifications 7.3.2 ...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 rise linearly with the internal temperature until the higher set point is...
... heatsink that point, the fan speed is at a lower speed and noise level, while internal chassis temperatures are low. Figure 7-9. The motherboard must supply a constant +12 V to the processor's power header to ensure proper operation of the system integrator. Boxed Processor Specifications 7.3.2 ...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 rise linearly with the internal temperature until the higher set point is...
Data Sheet
Page 96
...pin of the connector labeled as follows: As processor power has increased the required thermal solutions have a quieter system in the 775-Land Package Thermal Design Guide. § 96 Datasheet The fan speed is above or equal to this set point, the ... from fan heatsink to a thermistor controlled mode, allowing compatibility with PWM output (CONTROL see the Intel® Pentium® 4 Processor on the Tinlet temperature measured by more details on specific motherboard requirements for 4-wire based fan speed control see Table 7-1) and remote thermal diode measurement capability the...
...pin of the connector labeled as follows: As processor power has increased the required thermal solutions have a quieter system in the 775-Land Package Thermal Design Guide. § 96 Datasheet The fan speed is above or equal to this set point, the ... from fan heatsink to a thermistor controlled mode, allowing compatibility with PWM output (CONTROL see the Intel® Pentium® 4 Processor on the Tinlet temperature measured by more details on specific motherboard requirements for 4-wire based fan speed control see Table 7-1) and remote thermal diode measurement capability the...