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Chapter 7
threshold voltages, etc. The PWI specifi cation
defi nes a communication interface between
a processor and one or more external PMIC. PWI does not include OS interfaces for
performance monitoring and control.
7.7.3 The PWI Specifi cation
The demand for advanced power management techniques is driven by the increased
functionality in portable devices. To provide longer battery life a number of power
management techniques are available:
•
Dynamic voltage and frequency scaling
•
Adaptive voltage and frequency scaling
•
Back-biasing for static leakage reduction
These power management techniques ...