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参数资料
| 型号： | RK80546KG0882MM |
| 厂商： | INTEL CORP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 64-BIT, 3200 MHz, MICROPROCESSOR, CPGA604 |
| 封装： | FLIP CHIP, MICRO PGA-604 |
| 文件页数： | 87/106页 |
| 文件大小： | 4724K |
| 代理商： | RK80546KG0882MM |
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Datasheet
81
Thermal Specifications
6.2.3
On-Demand Mode
The processor provides an auxiliary mechanism that allows system software to force the processor
to reduce its power consumption. This mechanism is referred to as “On-Demand” mode and is
distinct from the Thermal Monitor and Thermal Monitor 2 features. On-Demand mode is intended
as a means to reduce system level power consumption. Systems using the 64-bit
Intel Xeon processor with 2 MB L2 cache must not rely on software usage of this mechanism to
limit the processor temperature.
If bit 4 of the IA32_CLOCK_MODULATION MSR is written to a ‘1’, the processor will
immediately reduce its power consumption via modulation (starting and stopping) of the internal
core clock, independent of the processor temperature. When using On-Demand mode, the duty
cycle of the clock modulation is programmable via bits 3:1 of the same
IA32_CLOCK_MODULATION MSR. In On-Demand mode, the duty cycle can be programmed
from 12.5% on/ 87.5% off to 87.5% on/12.5% off in 12.5% increments. On-Demand mode may be
used in conjunction with the Thermal Monitor. If the system tries to enable On-Demand mode at
the same time the TCC is engaged, the factory configured duty cycle of the TCC will override the
duty cycle selected by the On-Demand mode.
6.2.4
PROCHOT# Signal Pin
An external signal, PROCHOT# (processor hot) is asserted when the processor die temperature has
reached its factory configured trip point. If Thermal Monitor is enabled (note that Thermal Monitor
must be enabled for the processor to be operating within specification), the TCC will be active
when PROCHOT# is asserted. The processor can be configured to generate an interrupt upon the
assertion or de-assertion of PROCHOT#. Refer to the Intel Architecture Software Developer’s
Manual(s) for specific register and programming details.
PROCHOT# is designed to assert at or a few degrees higher than maximum TCASE (as specified by
Thermal Profile A) when dissipating TDP power, and cannot be interpreted as an indication of
processor case temperature. This temperature delta accounts for processor package, lifetime and
manufacturing variations and attempts to ensure the Thermal Control Circuit is not activated below
maximum TCASE when dissipating TDP power. There is no defined or fixed correlation between
the PROCHOT# trip temperature, the case temperature or the thermal diode temperature. Thermal
solutions must be designed to the processor specifications and cannot be adjusted based on
experimental measurements of TCASE, PROCHOT#, or Tdiode on random processor samples.
6.2.5
FORCEPR# Signal Pin
The FORCEPR# (force power reduction) input can be used by the platform to cause the processor
to activate the TCC. If the Thermal Monitor is enabled, the TCC will be activated upon the
assertion of the FORCEPR# signal. The TCC will remain active until the system deasserts
FORCEPR#. FORCEPR# is an asynchronous input. FORCEPR# can be used to thermally protect
other system components. To use the VR as an example, when the FORCEPR# pin is asserted, the
TCC circuit in the processor will activate, reducing the current consumption of the processor and
the corresponding temperature of the VR.
If should be noted that assertion of the FORCEPR# does not automatically assert PROCHOT#. As
mentioned previously, the PROCHOT# signal is asserted when a high temperature situation is
detected. A minimum pulse width of 500
s is recommend when the FORCEPR# is asserted by the
system. Sustained activation of the FORCEPR# pin may cause noticeable platform performance
degradation.
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相关代理商/技术参数 |
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| RK80546KG0882MMS L7ZE | 制造商:Intel 功能描述:XEON 3.2,2M,800MHZ,FC-MPGA4 - Trays |
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