Novel approach for Exchanges Briefs Concept, Design, and Implementation of Reconfigurable CORDIC

Vaddepati Rajeswari, Srikantam Chandra Sekhar


This brief presents the key concept, design strategy, and implementation of reconfigurable coordinate rotation digital computer (CORDIC) architectures that can be configured to operate either for circular or for hyperbolic trajectories in rotation as well as vectoring-modes. It can, therefore, be used to perform all the functions of both circular and hyperbolic CORDIC. We propose three reconfigurable CORDIC designs: 1) a reconfigurable rotation-mode CORDIC that operates either for circular or for hyperbolic trajectory; 2) a reconfigurable vectoring-mode CORDIC for circular and hyperbolic trajectories; and 3) a generalized reconfigurable CORDIC that can operate in any of the modes for both circular and hyperbolic trajectories. The reconfigurable CORDIC can perform the computation of various trigonometric and exponential functions, logarithms, square-root, and so on of circular and hyperbolic CORDIC using either rotation-mode or vectoring-mode CORDIC in one single circuit. It can be used in digital synchronizers, graphics processors, scientific calculators, and so on. It offers substantial saving of area complexity over the conventional design for reconfigurable applications.

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