Datasheet

Features
100 Dual-Core Intel® Xeon® Processor 7100 Series Datasheet
7.4.3.3.5 MCF: Maximum Core Frequency
This location contains the maximum core frequency for the processor. The frequency
should equate to the markings on the processor and/or the QDF/S-spec speed even if
the parts are not limited or locked to the intended speed. Format of this field is in MHz,
rounded to a whole number, and encoded in hex format. Writes to this register have no
effect.
Example: A 3.40 GHz processor will have a value of 0D48h, which equates to 3400
decimal. Therefore, offset 1D - 1Eh has a value of 0D48.
7.4.3.3.6 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 Ta b le 2- 10 the maximum VID is 1.3500 V maximum voltage. Offset 1F
- 20h would contain 0546h (1350 decimal).
7.4.3.3.7 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
CC
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 Ta b l e 2 -1 0 and Ta bl e 2- 11 for the minimum core
voltage specifications based on actual real-time current draw.
Offset: 1Dh-1Eh
Bit Description
15:0 Maximum Core Frequency
0000h-09C3: Reserved
09C4h: 2.5 Ghz
09C5h-0A27h: Reserved
0A28h: 2.6 GHz
0A29h-0BB7h: Reserved
0BB8h: 3.0 GHz
0BB9h-0C5Eh: Reserved
0C5Fh: 3.167 GHz
0C60h-0C7Fh: Reserved
0C80h: 3.2 GHz
0C81h-0D5Eh: Reserved
0D05h: 3.333 GHz
0D06h-0D47h: Reserved
0D48h: 3.4 GHz
0D49h-FFFFh: Reserved
Offset: 1Fh-20h
Bit Description
15:0 Maximum Core VID
0000h-0545h: Reserved
0546h: 1.35 V
0548h-FFFFh: Reserved