基于ispXPLD的任意编码波形发生器的设计

Design of Digitial Coding Waveform Generator Based on eXpanded Programmable Logic Device

研究可程控任意编码波形在智能仪器和雷达等领域中具有重要意义。介绍了一种可程控编码波形发生器的设计,利用可预制计数器和并入串出移位寄存器阵列,通过微机控制,可形成多位的任意一种组合的编码脉冲波形,实现码元宽度、重复周期、编码脉冲个数(512bit以内)任意可变。阐述了Lattice公司的设计工具以及设计流程,并用ispXPLD器件实现该波形发生器。该编码波形发生器的最大码元bit数也可根据实际情况只需简单的修改程序便可做相应的改动。

A design of program controlled coding waveform generatorr is designed by using the controlling counters and PS shift register arrays. By means of the control by microcomputer, a coded waveform with infinite combination of 0～511bits can be formed, and the width of code element and repeat cycle of the waveform-coding are variable. The design tools and flow of Lattice's are introduced, and the waveform generator is implemented using ispXPLD device of Lattice.