全定制CORDIC运算器设计

J4 ›› 2011, Vol. 33 ›› Issue (10): 64-69.

全定制CORDIC运算器设计

毕〓卓,戴益君

（上海大学机电工程与自动化学院,上海 200072）

收稿日期:2010-05-20 修回日期:2010-10-26 出版日期:2011-10-25 发布日期:2011-10-25

Full Custom CORDIC Arithmetic Unit Design

BI Zhuo,DAI Yijun

（School of Mechatronic Engineering and Automation,Shanghai University,Shanghai 200072,China）

Received:2010-05-20 Revised:2010-10-26 Online:2011-10-25 Published:2011-10-25

摘要/Abstract

摘要：

浮点三角函数计算是导航系统、三维图像处理、雷达信号预处理等领域的基本运算。本文采用CORDIC算法及全定制集成电路设计方法实现了一种浮点三角函数计算电路，其输出数据兼容IEEE754单精度浮点数标准。本文首先介绍了CORDIC算法的原理，并根据性能优先的原则采用了流水线结构；然后给出了基于SMIC 0.13μm 1P8M CMOS工艺下的静态电路结构及版图设计。全定制CORDIC运算器的面积为605 284μm2，最长路径延时（SS条件下）为3.013ns。

关键词: CORDIC, 流水线结构, 全定制

Abstract:

Floatingpoint trigonometric computing is a fundamental operation in navigation systems, 3D image processing, radar signal preprocessing and so on. This paper presents a floating point trigonometric computing circuit using a CORDIC algorithm and a full custom layout method, and the output data are compatible with the IEEE754 signal precision floatingpoint standard. It describes the CORDIC algorithm principle and chooses a pipeline structure based on the principle of priority on performance. A static circuit structure and a full custom layout are given in the SIMC 0.13μm 1P8M CMOS process. The silicon area of data path is 605 284μm2 and the critical path delay is 3.013ns in the SS (SlowSlow) corners.

Key words: CORDIC;pipeline;full custom

毕〓卓,戴益君. 全定制CORDIC运算器设计[J]. J4, 2011, 33(10): 64-69.

BI Zhuo,DAI Yijun. Full Custom CORDIC Arithmetic Unit Design[J]. J4, 2011, 33(10): 64-69.

[1]	陈小文, 芮志超, 朱麒瑾, 董羽, 孟宇, . 高精度两步分支混合CORDIC算法设计及FPGA实现[J]. 计算机工程与科学, 2024, 46(12): 2099-2108.
[2]	石伟,苏博,任洪广,王志英. 一种低功耗异步乘法器的研究与实现[J]. J4, 2012, 34(5): 73-77.
[3]	李宝峰, 窦勇, 雷元武. 优化的JPEG2000算术编码器结构[J]. 计算机工程与科学, 2009, 31(11): 13-16.
[4]	雷元武[1] 周杰[1] 葛颖增[2] 窦勇[1]. 并行CORDIC算法的研究及FPGA实现[J]. J4, 2008, 30(8): 75-78.