Guidelines

Thermal Mechanical Design
18 Dual-Core Intel
®
Xeon
®
Processor 7000 Sequence Thermal /Mechanical Guidelines
NOTE: For more information on PROCHOT#, THERMTRIP#, and FORCEPR# see the Dual-Core Intel®
Xeon® Processor 7000 Sequence Datasheet
2.2.3 Thermal Profile
The thermal profile is a linear function that defines the relationship between a processor’s case
temperature and its power consumption as shown in Figure 2-5. The equation of the thermal profile
is defined as:
Equation 2-1. y = ax + b
Where:
y = Processor case temperature, T
CASE
(°C)
x = Processor power consumption (W)
a = Case-to-ambient thermal resistance,
CA
(°C/W)
b = Processor local ambient temperature, T
LA
(°C)
THERMTRIP#
THERMTRIP#
reached
THERMTRIP# Asserted, both
cores shut down
THERMTRIP#
reached
THERMTRIP#
reached
THERMTRIP#
reached
FORCEPR#
FORCEPR# Asserted TCC TCC
Table 2-2. Input and Output Conditions for Dual Core Thermal Management (Sheet 2 of 2)
Item
Input Output
Core1 Core2 Core1 Core2