6402 datasheet(52/250 Pages) INTEL

52 / 250 page

Electrical, Power, and Thermal

Intel® 6400/6402 Advanced Memory Buffer Datasheet

An 8-bit register will store the temperature. The sensor measures from 0 to 127

degrees C measured in 0.5 degree increments in a register with values from 0 to 255.

Internal analog nodes (anode, cathode, and so forth) of this circuit will not be brought

out to package pins to keep noise at a minimum.

Refer to the Intel® 6400/6402 Advanced Memory Buffer Thermal Mechanical Design

Guide for more information on the thermal sensor.

4.7.1

Thermal Sensor Effects on the AMB’s

Functional Behavior

When enabled, the results of the thermal trip points TEMPLO and TEMPMID are

reported in FBD Status 0 responses following Sync commands.

If the temperature exceeds TEMPHI, errors are logged. If the TEMPHIENABLE bit in the

TEMPSTAT register is set, DDR shutdown occurs and FBD links go into electrical idle

mode. This over TEMPHI behavior also applies when in LAI mode. See the error chapter

for a more complete description of chip behavior when TEMPHI is exceeded.

A temperature TEMPSTAT.INCREASING bit is also generated depending on whether the

temp is greater or less than the last time the INCREASING bit was sampled. Sampling

to create INCREASING bit is controlled by writes to register UPDATED. When

temperature is above TEMPMID, this information also shows up in the

FBDS0.Thermal_Trip register field and in the Status response of FBD Sync commands

targeted to FBDS0.

6402 Datasheet(PDF) 52 Page - Intel Corporation