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The features of the ARM1136JF-S processor that improve energy efficiency include:
accurate branch and return prediction, reducing the number of incorrect instruction fetch and decode operations
use of physically addressed caches, which reduces the number of cache flushes and refills, saving energy in the system
the use of MicroTLBs reduces the power consumed in translation and protection look-ups each cycle
the caches use sequential access information to reduce the number of accesses to the TagRAMs and to unwanted Data RAMs.
In the ARM1136JF-S processor extensive use is also made of gated clocks and gates to disable inputs to unused functional blocks. Only the logic actively in use to perform a calculation consumes any dynamic power.