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Research Report CS-RR-161

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Paul Chown, Notes on the Design of a Barrel Shifter for the Warwick Pipelined CORDIC Processor (August 1, 1990).

Abstract

This document discusses the design decisions made during the design of the barrel shifters used in the floating point adjustment circuitry of the Warwick pipelined CORDIC processor. The barrel shifter is required for both the input (mantissa alignment) and output (post normalistion) parts of the floating data path, although it also has applications in other areas such as a bit field extraction and multiplication/division. A brief survey of the available techniques will be given, followed by a discussion of the design process for the Barrel shifters in our implementatioof the CORDIC algorithm

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