Intel i7-2600 CM8062300834302S User Manual

256

Datasheet, Volume 2

This register contains configuration regarding VTS temperature estimation calculations 
that are done by PCODE. For the BW estimation mode, the following formula is used:

VTS temperature estimation = T(n) + VTS_Offset

where T(n) = (1 – VTS_TIME_CONSTANT) * T(n–1) + VTS_MUTXTIPLIER * 
(MEM_ACC(n) – MEM_ACC(n–1)), where (MEM_ACC(n) – MEM_ACC(n–1) equals 
memory bandwidth

This register is read by PCODE only during Reset Phase 4.

31:22

RW

10Eh

Uncore

VTS multiplier (VTS_MUTXTIPLIER)
The VTS multiplier serves as a multiplier for the translation of the 

memory BW to temperature. The units are given in 

1 / power(2,44).

21:12

RW

0C8h

Uncore

VTS time constant (VTS_TIME_CONSTANT)
This factor is relevant only for BW based temperature estimation. 

It is equal to "1 minus alpha".
The value of the time constant (1 – alpha) is determined by 

VTS_TIME_CONSTANT / power(2,25) per 1 mSec.

11

RO

0h

10:4

RW

32h

Uncore

VTS offset adder (VTS_OFFSET)
The offset is intended to provide a temperature proxy offset, so the 

option of having a fixed adder to VTS output is available. 

3

RO

0h

2

RW

1b

Uncore

Disable EXTTS (DISABLE_EXTTS)
When set, PCODE should ignore EXTTS indication that is obtained 

from the PCH and will rely on PECI or DDR BW estimations.

1

RW

0b

Uncore

Disable Bandwidth Estimation (DISABLE_BW_ESTIMATION)
When set, PCODE should ignore DDR BW estimation that is 

obtained from the memory controller and will rely on PECI or 

EXTTS.

0

RW

0b

Uncore

Disable PECI Control (DISABLE_PECI_CONTROL)
When set, PCODE should ignore DDR temperature that is given by 

PECI.