vhdl语言正弦信号发生器设计，传统的用分立元件或通用数字电路元件设计电子线路的方法设计周期长,花费大,

可移植性差。本文以正弦波发生器为例,利用EDA 技术设计电路,侧重叙述了用VHDL 来完

成直接数字合成器(DDS) 的设计,DDS 由相位累加器和正弦ROM 查找表两个功能块组成,其

中ROM查找表由兆功能模块LPM-ROM来实现。-The traditional use of discrete components or general purpose digital circuit design method of electronic circuit design cycle is long, expensive, poor portability. In this paper, sine wave generator, for example, circuit design using EDA technology, focusing on the use of VHDL descr iption to complete the direct digital synthesizer (DDS) design, DDS ROM from the phase accumulator and sine lookup table composed of two functional blocks, including ROM lookup table by the LPM-ROM modules trillion to implement.