6402 datasheet(202/250 Pages) INTEL

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Registers

202

Intel® 6400/6402 Advanced Memory Buffer Datasheet

14.5.3.4

UPDATED: Update Temp Diff Bit

Take new temperature sample and update the temp diff bit (INCREASING).

14.5.3.5

TEMPSTAT: Thermal Sensor Status Register

This register controls and reports temperature status.

Device:

NodeID

Function: 3

Offset:

83h

Bit

Attr

Default

Description

7:1

00h

reserved

0RWS

UPDATE:

Write ‘1’ =

a. latch current temperature from the TEMP register for comparison

on next UPDATE and

b. update INCREASING bit of TEMPSTAT register based on the current

temperature and the last latched temperature;

c. Automatically clears this bit to ‘0’ after INCREASING bit is updated;

Write ‘0’ - no effect

Device:

NodeID

Function: 3

Offset:

84h

Bit

Attr

Default

Description

7:6

Reserved

RWST

NoAutoUpdate

‘1’ = turns off update of temp stat values so that forced values written in

by firmware are not overwritten

‘0’ = overtemp trip bits are continuously and automatically updated as

normal and increasing bit is updated through UPDATE register mechanism

4RW

INCREASING

‘1’ = Temperature has increased since the last time UPDATE bit was set in

UPDATED register.

‘0’ = Temperature has not increased since the last time UPDATE bit was set

in UPDATED register.

This is reflected as the Rising/Falling value in the Thermal Trip field of

northbound FBD status 0.

3RWST

OVERTEMPHI

‘1’ = Temperature is above or equal to TEMPHI.TRIP

‘0’ = Temperature is below TEMPHI.TRIP

2RWST

OVERTEMPMID

‘1’ = Temperature is above or equal to TEMPMID.TRIP

‘0’ = Temperature is below TEMPMID.TRIP

This is reflected in the Thermal Trip value of northbound FBD status 0

1RWST

OVERTEMPLO

‘1’ = Temperature is above or equal to TEMPLO.TRIP

‘0’ = Temperature is below TEMPLO.TRIP

This is reflected in the Thermal Trip value of northbound FBD status 0

0RWST

TEMPHIENABLE

‘1’ = Allow OVERTEMPHI=1 to shut down the DDR channel, drop DDR

commands, log an error, and take FBD links to EI.

‘0’ = OVERTEMPHI=1 only logs an error.

6402 Datasheet(PDF) 202 Page - Intel Corporation

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