脉冲信号发生~4/比较法的CPLD设计

CPLD Design for the Pulse Signal Generation-Comparison Method

本文讨论了一种新的脉冲信号的数字设计方法4/比较法,该方法通过对信号频率、占空比、余数的比较来产生频率、占空比均步进可调的脉冲信号。实验表明,该方法是行之有效的。本文着重介绍了其CPLD设计原理和实现方法,同时介绍了以CPLD为数字处理核心、在PC机的控制下实现脉冲信号产生的系统设计方案。

A new digital design method which is called comparison method for pulse signals is introduced in this paper, in which the pulse signal frequency, the duty cycle and the remainder are compared to generate the pulse signals whose frequencies, duty cycles and remainders are adjustable. Experiments show it is feasible. The CPLD design principle of the comparison method and the implementation are given emphatically. Meanwhile, a scheme of designing a pulse signal generation system controlled by a PC is introduced, which takes CPLD as the digital processing kernel.