Ultra-Low Power Integrated Circuit Design by Nianxiong Nick Tan Dongmei Li & Zhihua Wang

Author:Nianxiong Nick Tan, Dongmei Li & Zhihua Wang
Language: eng
Format: epub
Publisher: Springer New York, New York, NY

Fig. 23The Structure of the Power Gating

The working state of a system, which has taken the power gating technology, can be divided to multi-level:

Shut down the clock of DSP core, however keeping the supply on.

Cut off the power supply of the DSP core, keeping the key states by the state retention register. Cache works as usual. The system can be awakened in the least time.

Cut off the power supply of the DSP core, transferring the key states to the external memory through the scan register chains. Cache works as usual. The system can be awakened in the less time.

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