BX80547PG3200FSL8Q6 Datasheet, PDF(17/105 Page) Intel Corporation – Intel® Pentium® 4 Processor 6xxΔ Sequence and Intel® Pentium® 4 Processor Extreme Edition

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BX80547PG3200FSL8Q6 Datasheet, PDF (17/105 Pages) Intel Corporation – Intel® Pentium® 4 Processor 6xxΔ Sequence and Intel® Pentium® 4 Processor Extreme Edition

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2.4

Electrical Specifications

Voltage Identification

The VID specification for the Pentium 4 processor is supported by the Voltage Regulator Down

(VRD) 10.1 Design Guide for Desktop LGA775 Socket. The voltage set by the VID signals is the

reference VR output voltage to be delivered to the processor VCC pins. A minimum voltage is

provided in Table 2-8 and changes with frequency. This allows processors running at a higher

frequency to have a relaxed minimum voltage specification. The specifications have been set such

that one voltage regulator can work with all supported frequencies.

Individual processor VID values may be calibrated during manufacturing such that two devices at

the same speed may have different VID settings.

The Pentium 4 processor uses six voltage identification signals, VID[5:0], to support automatic

selection of power supply voltages. Table 2-2 specifies the voltage level corresponding to the state

of VID[5:0]. A â1â in this table refers to a high voltage level and a â0â refers to low voltage level. If

the processor socket is empty (VID[5:0] = x11111), or the voltage regulation circuit cannot supply

the voltage that is requested, it must disable itself. See the Voltage Regulator Down (VRD) 10.1

Design Guide for Desktop LGA775 Socket for more details.

Power source characteristics must be guaranteed to be stable whenever the supply to the voltage

regulator is stable.

The LL_ID[1:0] lands are used by the platform to configure the proper loadline slope for the

processor. LL_ID[1:0] = 00 for the Pentium 4 processor.

The VTT_SEL land is used by the platform to configure the proper VTT voltage level for the

processor. VTT_SEL = 1 for the Pentium 4 processor.

The GTLREF_SEL signal is used by the platform to select the appropriate chipset GTLREF level.

GTLREF_SEL = 0 for the Pentium 4 processor.

LL_ID[1:0] and VTT_SEL are signals that are implemented on the processor package. That is,

they are either connected directly to VSS or are open lands.

Datasheet

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