Numerical Function Generators Using LUT Cascades
Numerical Function Generators Using LUT Cascades
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DOI：
10.1109/tc.2007.1033
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发表时间：
2007-06
影响因子：
3.7
通讯作者：
Tsutomu Sasao;Shinobu Nagayama;J. T. Butler
中科院分区：
文献类型：
--
作者：
Tsutomu Sasao;Shinobu Nagayama;J. T. Butler
本文提出了一种结构和一种合成方法，用于高速计算定点数值函数，如三角函数，对数，S形，平方根，以及这些函数的组合。我们的架构是基于查找表（LUT）级联，这导致在电路复杂性显着降低相比，传统的方法。这是适合于自动合成，我们展示了一种合成方法，将一个类似Matlab的规格成LUT级联设计。实验结果表明，该方法在现场可编程门阵列（FPGA）上实现是有效的
This paper proposes an architecture and a synthesis method for high-speed computation of fixed-point numerical functions such as trigonometric, logarithmic, sigmoidal, square root, and combinations of these functions. Our architecture is based on the lookup table (LUT) cascade, which results in a significant reduction in circuit complexity compared to traditional approaches. This is suitable for automatic synthesis and we show a synthesis method that converts a Matlab-like specification into an LUT cascade design. Experimental results show the efficiency of our approach as implemented on a field-programmable gate array (FPGA)