Importance

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Abstract

A space-efficient, multi-cycle barrel shifter circuit for shifting data inputted into the circuit by a shift value over multiple clock cycles which circuit includes: (a) a load module adapted to receive a load signal and the data, the load module coupled to the shift module and configured to load the data into the shift module upon receipt of a load signal; (b) a register module coupled to the shift module and to the load module, where the register module is a register adapted to receive a clock signal and configured to pass the data through the shift module with each clock cycle; (c) a constant shift module coupled to the register module and the shift module and configured to shift the data by a constant amount with each clock cycle; and (d) a control module coupled to the shift module and the load module, the control module capable of generating a command signal for each elementary shifter in the shift module for each clock cycle based upon the shift value, the command signal determining the amount of shift applied to the data by the shift module during each clock cycle so that the total amount of shift applied to the data after multiple clock cycles equals the shift value.

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First Claim