Intel 9110N NE80567KE025003 用户手册
产品代码
NE80567KE025003
Thermal Specifications
94
Intel
®
Itanium
®
Processor 9300 Series Datasheet
their cooling solution design. See Intel® Itanium® Processor 9300 Series Processor
Thermal Mechanical Design Guide for additional guidance on implementing a compliant
processor thermal solution.
Thermal Mechanical Design Guide for additional guidance on implementing a compliant
processor thermal solution.
5.1.5
Thermal Warning
THERMWARN is the temperature beyond which data integrity is not guaranteed and
PROCHOT_N remains asserted.
PROCHOT_N remains asserted.
5.1.6
Thermal Trip
The Intel Itanium processor 9300 series protects itself from catastrophic overheating
by use of an internal thermal sensor. The sensor trip point is set well above the
maximum operating temperature to ensure that there are no false trips. The Intel
Itanium processor 9300 series will issue THERMTRIP_N and stop all execution when the
junction temperature exceeds a safe operating level. At this point THERMTRIP_N is
asserted. If THERMTRIP_N is asserted, processor voltages (VCCCORE, VCCUNCORE,
AND VCCCACHE) must be removed within the timeframe defined in
by use of an internal thermal sensor. The sensor trip point is set well above the
maximum operating temperature to ensure that there are no false trips. The Intel
Itanium processor 9300 series will issue THERMTRIP_N and stop all execution when the
junction temperature exceeds a safe operating level. At this point THERMTRIP_N is
asserted. If THERMTRIP_N is asserted, processor voltages (VCCCORE, VCCUNCORE,
AND VCCCACHE) must be removed within the timeframe defined in
.
Data will be lost or corrupt, and transaction time outs will occur if the Intel Itanium
processor 9300 series goes into thermal trip. The part that shuts down may still have
pending snoops or memory reads that the other sockets in the partition may have
requested.
processor 9300 series goes into thermal trip. The part that shuts down may still have
pending snoops or memory reads that the other sockets in the partition may have
requested.
Once THERMTRIP_N is asserted, the Intel Itanium processor 9300 series remains
stopped until RESET_N is asserted. If the die temperature has dropped below the trip
level, a RESET_N pulse can be used to reset the processor. If the temperature has not
dropped below the trip level, the processor will continue to drive THERMTRIP_N and
remain stopped. It is recommended to allow the processor case temperature to drop
below the specified design target before issuing a reset to the processor. Please see
stopped until RESET_N is asserted. If the die temperature has dropped below the trip
level, a RESET_N pulse can be used to reset the processor. If the temperature has not
dropped below the trip level, the processor will continue to drive THERMTRIP_N and
remain stopped. It is recommended to allow the processor case temperature to drop
below the specified design target before issuing a reset to the processor. Please see
for details on the case temperature.
Note:
In a partitioned system, sockets in the same partition are in the same coherency
domain, so they cannot continue to operate if even one of the processors asserts
THERMTRIP_N and shuts down. Moreover, a cold reset is required to get the part back
up after a THERMTRIP event. Because cold reset will reset all the sockets in the
partition, the other sockets cannot continue running without a reset event.
5.1.7
PROCHOT
The temperature at PROCHOT represents the maximum normal operating temperature
of the processor. PROCHOT_N is asserted when the processor temperature is greater
than or equal to T
of the processor. PROCHOT_N is asserted when the processor temperature is greater
than or equal to T
PROCHOT.
PROCHOT_N is a signal from the processor to the platform indicating that the processor
has detected an over-temperature condition and it is taking corrective measures. This
pin is not asserted when FORCEPR_N or VR_THERMALERT_N is asserted unless the
thermal system has detected a PROCHOT condition independent of those input signals.
The condition may occur due to any of the following conditions:
has detected an over-temperature condition and it is taking corrective measures. This
pin is not asserted when FORCEPR_N or VR_THERMALERT_N is asserted unless the
thermal system has detected a PROCHOT condition independent of those input signals.
The condition may occur due to any of the following conditions:
• The thermal environment is outside of the limits defined for full performance
operation.
• The processor power consumption is unbalanced due to very high activity factors in
some cores coupled with very low activity factors in others.