Intel 9150N NE80567KE025015 User Manual
Product codes
NE80567KE025015
Thermal Specifications
92
Intel
®
Itanium
®
Processor 9300 Series Datasheet
available in CSR or via SMBus. When it is below the PROCHOT setpoint the DT readout
will have a positive value. The DT has a limited range. It will report out the value of its
upper or lower limits when it has reached the limits and set
QR_CSR_IPF_THERM_STATUS.valid = 1’b0.
will have a positive value. The DT has a limited range. It will report out the value of its
upper or lower limits when it has reached the limits and set
QR_CSR_IPF_THERM_STATUS.valid = 1’b0.
shows the processor thermal sensor accuracy with respect to the DT readout.
The margin of error is relative to PROCHOT and represents the typical +/-3-sigma
range. This data is for a large sample of parts. It should be noted that a particular part
should be consistent across the entire operating range.
range. This data is for a large sample of parts. It should be noted that a particular part
should be consistent across the entire operating range.
5.1.2
Intel Itanium Processor 9300 Series 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 Itanium processor 9300 series, the
central thermometer logic block will report the highest temperature of all sensors.
Referring to
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, 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 processor 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
and frequency.
After a delay, if the processor temperature is below the T
PROCHOT
threshold,
normal operation will resume including the processor being allowed to operate
at boost frequency if appropriate.
at boost frequency if appropriate.
b. If T>=T
PROCHOT
and the processor 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 transitions to the voltage
and frequency of the lowest supported P-state.
A Corrected Machine Check Interrupt (CMCI) is issued when processor enters
and exits SIM.
The Intel Itanium processor 9300 series will remain in this low power mode
until the temperature decreases and drops below (T
the processor will enter Single Issue Mode (SIM) and transitions to the voltage
and frequency of the lowest supported P-state.
A Corrected Machine Check Interrupt (CMCI) is issued when processor enters
and exits SIM.
The Intel Itanium processor 9300 series will remain in this low power mode
until the temperature decreases and drops below (T
PROCHOT
- T
HYSTERESIS
). The
processor will be in this low power mode for a minimum of 1 second and after 1
second will resume normal operation as soon as the temperature has
decreased sufficiently.
second will resume normal operation as soon as the temperature has
decreased sufficiently.
Table 5-1.
Thermal Sensor Accuracy Distribution
DT Readout
Expected Margin of Error
Relative to PROCHOT
0x83 - 0x80, 0x00 - 0x07
±1C
0x08 - 0x0E
±2C
0x0F - 0x14
±3C
0x15 - 0x1B
±4C
0x1C - 0x22
±5C
0x23 - 0x29
±6C
0x2A - 0x30
±7C
0x31 - 0x37
±8C
0x38- 0x3E
±9C
0x3F - 0x45
±10C