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Intel® Xeon® Processor 7400 Series Datasheet 123

Features

7.4.3.3.5 MAXVID: Maximum Core VID

This location contains the maximum Core VID (Voltage Identification) voltage that may

be requested via the VID pins. This field, rounded to the next thousandth, is in mV and

is reflected in hex. Writes to this register have no effect.

Example: From Table 2-9the maximum VID is 1.450 V maximum voltage. Offset 1F -

20h would contain 05AAh (1450 decimal).

7.4.3.3.6 MINV: Minimum Core Voltage

This location contains the minimum Processor Core voltage. This field, rounded to the

next thousandth, is in mV and is reflected in hex. The minimum V

reflected in this

field is the minimum allowable voltage assuming the FMB maximum current draw.

Writes to this register have no effect.

Note: The minimum core voltage value in offset 21 - 22h is a single value that assumes the

FMB maximum current draw. Refer to Table 2-9and Table 2-10 for the minimum core

voltage specifications based on actual real-time current draw.

Example: For an Intel® Xeon® Processor 7400 Series the minimum voltage is 0.695 V

= 0.900 V (Min VID) - 0.205 V (Voltage Offset at maximum current). Offset 21 - 22h

would contain 0267Fh (0695 decimal).

7.4.3.3.7 TCASE: T

CASE

Maximum

This location provides the maximum T

CASE

for the processor. The field reflects

temperature in degrees Celsius in hex format. This data can be found in the Table 6-1.

The thermal specifications are specified at the case Integrated Heat Spreader

(IHS).Writes to this register have no effect.

Offset: 1Dh-1Eh

Bit Description

15:0 Maximum Core Frequency

0000h-FFFFh: MHz

Offset: 1Fh-20h

Bit Description

15:0 Maximum Core VID

0000h-FFFFh: mV

Offset: 21h-22h

Bit Description

15:0 Minimum Core Voltage

0000h-FFFFh: mV

1 2 ... 118 119 120 121 122 123 124 125 126 127 128 ... 135 136

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Lenovo AD80582QH056003 Datenblatt Seite 123