Zitat

Once automatic mode is enabled, the TCC will activate
only when the internal die temperature is very near the temperature limits of the
processor. When TCC is enabled, and a high temperature situation exists (i.e. ,TCC is
active), the clocks will be modulated by alternately turning the clocks off and on at a 50%
duty cycle. Clocks will not be off for more than 3 µs when TCC is active. Cycle times are
processor speed dependent and will decrease linearly as processor core frequencies
increase. A small amount of hysteresis has been included to prevent rapid active/inactive
transitions of the TCC when the processor temperature is near the trip point. Once the
temperature has returned to a non-critical level, and the hysteresis timer has expired,
modulation ceases and TCC goes inactive. Processor performance will be decrease by
~50% when the TCC is active (assuming a 50% duty cycle), however, with a properly
designed and characterised thermal solution the TCC most likely will only be activated
briefly when the system is near maximum temperature and during the most power
intensive applications.