BX80547PG3200FSL8Q6 Datasheet, PDF (81/105 Pages) Intel Corporation – Intel® Pentium® 4 Processor 6xxΔ Sequence and Intel® Pentium® 4 Processor Extreme Edition

Thermal Specifications and Design Considerations
Figure 5-4. Thermal Monitor 2 Frequency and Voltage Ordering
T
TM2
f
MAX
f
TM2
VID
VID
TM2
Temperature
Frequency
VID
PROCHOT#
Time
The PROCHOT# signal is asserted when a high temperature situation is detected, regardless of
whether or not Thermal Monitor or Thermal Monitor 2 is enabled.
It should be noted that the Thermal Monitor 2 TCC can not be activated via the on demand mode.
The Thermal Monitor TCC, however, can be activated through the use of the on demand mode.
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.
Table 5-4 lists the Intel Pentium 4 processors in this document that support Thermal Monitor 2.
Table 5-4. Thermal Monitor 2 Support
Processor Name/Number
Thermal Monitor 2 Supported¹
Extreme Edition
No
670/672
Yes
660/662
Yes
650
No
640
No
630
No
NOTES:
1. Refer to the Intel^® Pentium^® 4 Processor on 90 nm Process Specification Update for a
complete list of the processor steppings and frequencies that support this feature.
Datasheet
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