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| 型號(hào)： | 80546KF |
| 廠商： | Intel Corp. |
| 英文描述： | 64-bit Intel Xeon Processor MP with up to 8MB L3 Cache |
| 中文描述： | 64位Intel Xeon處理器MP的高達(dá)8MB三級(jí)高速緩存 |
| 文件頁(yè)數(shù)： | 102/138頁(yè) |
| 文件大?。?/td> | 2666K |
| 代理商： | 80546KF |
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64-bit Intel
Xeon Processor MP with up to 8MB L3 Cache Datasheet
Thermal Specifications
The PROCHOT# signal is asserted when a high temperature situation is detected, regardless of
whether Thermal Monitor or Thermal Monitor 2 is enabled.
If a processor has its Thermal Control Circuit activated via a Thermal Monitor 2 event, and an
Enhanced Intel SpeedStep
“
technology transition to a higher target frequency (through the
applicable MSR write) is attempted, this frequency transition will be delayed until the TCC is
deactivated and the TM2 event is complete.
7.2.3
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 must not rely on software usage of
this mechanism to limit the processor temperature.
If bit 4 of the IA_32_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
IA_32_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 or Thermal Monitor 2. If Thermal Monitor is
enabled and 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.
Figure 7-3. Thermal Monitor 2 Frequency and Voltage Ordering
Time
T(hysteresis)
Vcc
V
TM2
V
NOM
f
TM2
f
MAX
T
TM2
Frequency
Temperature
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