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Advanced Configuration and Power Interface Specification

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<strong>Advanced</strong> <strong>Configuration</strong> <strong>and</strong> <strong>Power</strong> <strong>Interface</strong> <strong>Specification</strong><br />

Objects”). The _TSP object contains a time interval that OSPM uses to poll the hardware to sample<br />

the temperature. Whenever the time value returned by _TSP has elapsed, OSPM will evaluate _TMP<br />

to sample the current temperature (shown as Tn in the above equation). Then OSPM will use the<br />

sampled temperature <strong>and</strong> the passive cooling temperature trip point (_PSV) (which is the target<br />

temperature Tt) to evaluate the equation for P. The granularity of P is determined by the CPU<br />

duty width of the system.<br />

Note: Equation #1 has an implied formula.<br />

Equation #2:<br />

Pn = Pn-1 + HW[- ?P ] where Minimum%

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