Variable barrel shifter
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United States of America Patent
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Apr 22, 2014
Grant Date -
Jul 4, 2013
app pub date -
Dec 30, 2011
filing date -
Dec 30, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
In one embodiment a variable barrel shifter includes a shifter operable to apply a cyclic shift to each of a number of portions of a data word, a pivot circuit operable to swap sections of the data word around at least one pivot point in the data word, a first multiplexer operable to select between an input of the variable barrel shifter or an output of the pivot circuit as an input to the shifter, a second multiplexer operable to select between the input of the variable barrel shifter or an output of the shifter as an input to the pivot circuit, and a third multiplexer operable to select between the output of the shifter or the output of the pivot circuit as an output to the variable barrel shifter.
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