Trigonometric Computing Embedded in a Dynamically Reconfigurable CORDIC System-on-Chip

Abstract

This work presents the custom-made design of a 32-bit fixed-point trigonometric computer based on the CORDIC (Coordinate Rotation Digital Computer) algorithm and embedded in an AT94K40 system-on-chip device. This platform –composed of a 8-bit MCU that handles the program flow and a dynamically reconfigurable FPGA that synthesizes an evolvable slave coprocessor to speed up the calculus– provides a balanced control-computing architecture to efficiently process functions as sin(z), cos(z), atan(y/x) and sqrt(x²+y²). This approach reaches significant area-time optimizations over other traditional software-oriented solutions inspired on powerful stand-alone microprocessors.