Intel 9550 CM8063101049807 Data Sheet
Product codes
CM8063101049807
Intel
®
Itanium
®
Processor 9300 Series and 9500 Series Datasheet
135
Thermal Specifications
5.1.1.2
Thermal Sensor Accuracy Distribution for the Intel
®
Itanium
®
Processor 9500 Series
shows the processor thermal sensor accuracy with respect to the DT readout
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.
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.
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
using thermal sensors placed in several key locations on the die. Each sensor is fed into
a central thermometer logic block. For the Intel
®
Itanium
®
Processor 9300 Series and
Intel
®
Itanium
®
Processor 9500 Series, the central thermometer logic block will report
the highest temperature of all sensors. Referring to
, the sequence of steps
taken by the processor thermal management system are presented in steps (a) to (d).
a. If T>=T
PROCHOT
and the Intel
®
Itanium
®
Processor 9300 Series is operating at
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
processor to go to base voltage and frequency.
After a delay, if the processor temperature is below the T
PROCHOT
threshold,
normal operation will resume including the Intel
®
Itanium
®
Processor 9300
Series being allowed to operate at boost frequency if appropriate.
If T>=T
If T>=T
PROCHOT
, the Intel® Itanium® Processor 9500 Series thermal
management system will reduce the activity factor maximum limit. After a
delay, if the processor temperature is below T
delay, if the processor temperature is below T
PROCHOT
threshold, normal
operation will resume and the previous Intel® Itanium® Processor 9500 Series
activity factor maximum limit will be restored.
activity factor maximum limit will be restored.
b. If T>=T
PROCHOT
and the Intel
®
Itanium
®
Processor 9300 Series is already at or
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.
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.
0x2A - 0x30
±7°C
0x31 - 0x37
±8°C
0x38- 0x3E
±9°C
0x3F - 0x45
±10°C
Table 5-1.
Thermal Sensor Accuracy Distribution for the Intel
®
Itanium
®
Processor 9300
Series (Sheet 2 of 2)
DT Readout
Expected Margin of Error
Relative to PROCHOT
Table 5-2.
Thermal Sensor Accuracy Distribution for the Intel® Itanium® Processor
9500 Series
DT Readout
Expected Margin of Error
Relative to PROCHOT
0x83 - 0x80, 0x00 - 0x03
± 1°C
0x04 - 0x32
± 3°C
0x33 - 0x49
± 5°C