Fixed-Point Trigonometric Functions on FPGAs

Florent de Dinechin; Matei Istoan; Guillaume Sergent

Fixed-Point Trigonometric Functions on FPGAs

Florent de Dinechin ^{1, 2} Matei Istoan ^{1, 2} Guillaume Sergent ¹

1 LIP - Laboratoire de l'Informatique du Parallélisme

Inria Grenoble - Rhône-Alpes, LIP - Laboratoire de l'Informatique du Parallélisme

Abstract : Three approaches for computing sines and cosines on FPGAs are studied in this paper, with a focus of high-throughput pipelined architecture, and state-of-the-art implementation techniques. The first approach is the classical CORDIC iteration, for which we suggest a reduced iteration technique and fine optimizations in datapath width and latency. The second is an ad-hoc architecture specifically designed around trigonometric identities. The third uses a generic table- and DSP-based polynomial approximator. These three architectures are implemented and compared in the FloPoCo framework.

Document type :

Conference papers

Domain :

Computer Science [cs] / Computer Arithmetic

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https://hal-ens-lyon.archives-ouvertes.fr/ensl-00802777
Contributor : Florent de Dinechin <>
Submitted on : Wednesday, March 20, 2013 - 2:28:13 PM
Last modification on : Saturday, April 21, 2018 - 1:27:22 AM
Long-term archiving on : Sunday, April 2, 2017 - 3:58:39 PM

2013-SinCos-RR.pdf

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