Thermal Management; Thermal Sensor Accuracy Distribution For The Intel® Itanium® Processor 9500 Series - Intel BX80569Q9550 - Core 2 Quad 2.83 GHz Processor Datasheet

Thermal Specifications
Table 5-1. Thermal Sensor Accuracy Distribution for the Intel
Series (Sheet 2 of 2)
0x2A - 0x30
0x31 - 0x37
0x38- 0x3E
0x3F - 0x45
5.1.1.2 Thermal Sensor Accuracy Distribution for the Intel
Processor 9500 Series
Table 5-2
for the Intel® Itanium® Processor 9500 Series . The margin of error is relative to
PROCHOT and represents the typical ±3-sigma range. For the Intel® Itanium®
Processor 9500 Series, it is based on presilicon simulation data. It should be noted that
a particular part should be consistent across the entire operating range.
Table 5-2. Thermal Sensor Accuracy Distribution for the Intel® Itanium® Processor
9500 Series
DT Readout
0x83 - 0x80, 0x00 - 0x03
0x04 - 0x32
0x33 - 0x49
5.1.2

Thermal Management

5.1.2.1 Overview
The Thermal Management controller on the processor will measure the die temperature
using thermal sensors placed in several key locations on the die. Each sensor is fed into
a central thermometer logic block. For the Intel
Intel ® Itanium
the highest temperature of all sensors. Referring to
taken by the processor thermal management system are presented in steps (a) to (d).
a. If T>=T
boost frequency, then the thermal management system will instruct the
processor to go to base voltage and frequency.
After a delay, if the processor temperature is below the T
normal operation will resume including the Intel
Series being allowed to operate at boost frequency if appropriate.
If T>=T
management system will reduce the activity factor maximum limit. After a
delay, if the processor temperature is below T
operation will resume and the previous Intel® Itanium® Processor 9500 Series
activity factor maximum limit will be restored.
b. If T>=T
below base voltage and frequency, then the thermal management system will
assert PROCHOT_N and the processor will enter Single Issue Mode (SIM) and
transition to the voltage and frequency of the lowest supported P-state.
® ®
Intel Itanium Processor 9300 Series and 9500 Series Datasheet
DT Readout
shows the processor thermal sensor accuracy with respect to the DT readout
Expected Margin of Error
Relative to PROCHOT
® Processor 9500 Series, the central thermometer logic block will report
and the Intel
PROCHOT
, the Intel® Itanium® Processor 9500 Series thermal
PROCHOT
and the Intel
PROCHOT
Expected Margin of Error
Relative to PROCHOT
±7°C
±8°C
±9°C
±10°C
± 1°C
± 3°C
± 5°C
® Itanium
Figure
® ®
Itanium Processor 9300 Series is operating at
PROCHOT
® ®
Itanium Processor 9300 Series is already at or
® Itanium ® Processor 9300
® ®
Itanium
® Processor 9300 Series and
5-1, the sequence of steps
threshold,
PROCHOT
® ®
Itanium Processor 9300
threshold, normal
135