Data shifting and rotating apparatus

Details Data shifting and rotating apparatus Data shifting and rotating apparatus

G - Physics

06

F

328/39

G06F 9/315 (2006.01) G06F 5/01 (2006.01)

Patent

CA 1151249

- 27 - DATA SHIFTING AND ROTATING APPARATUS Abstract of the Disclosure A circuit for rotating a multibit binary word in either the right or the left direction includes a scale factor decoder receiving a scale factor word which specifies the magnitude of the rotation and a direction control signal which specifies the direction of rotation and providing a shift control word which is the same as the scale factor word when a right rotation is specified but providing a shift control word which is the complement of the scale factor word when a left rotation is specified. The circuit also includes a plurality of input buffers receiving an input word and providing corresponding input data, and a one-bit rotator receiving the input data and the direction control signal and rotating the input data in the right direction by one position when a left rotation is specified or providing the input data without rotation when a right rotation is specified. In addition, the circuit includes a network receiving data from the one-bit rotator and the shift control word and rotating the data from the one-bit rotator in only the right direction by a magnitude specified by the shift control word. Furthermore, the circuit includes a plurality of output buffers receiving the data from the network and providing an output word.

393094

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