| 摘要 |
A functional unit is described for selectively performing a number of types of bit rearrangement operations, including a generalized bit reverse operation and a generalized shuffle/unshuffle operation, and in addition left and right unsigned shift operations and an arithmetic shift right operation. The functional unit includes a shifter array and a control signal generator. The shifter array includes a plurality of selector circuits arrayed in a number of stages for shifting bits of an input data word in accordance with control signals, the output of the last stage corresponding to a rearranged output data word. The control signal generator generates control signals in response to rearrangement operation type and pattern information.
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