【摘要】 本文就三态电路在FPGA中的应用作了详细的说明。文章首先描述了一个调用lpm中三态电路模块的VHDL程序,这个程序会出现编译不能通过的问题。然后从这个问题出发,通过尝试三态电路应用的几种不同的具体实现方法,分析了问题产生的原因,并介绍了避免问题的产生的措施。更多还原

【Abstract】 Tri_state circuit programs which are applied in FPGA are introduced in detail in this article. A VHDL program of the Tri_state circuit that is used in LPM module is described at the beginning of the article. But it has an error when to compile it. Based on this problem, the article tries many different methods to analyze the reasons of the problems and shows how to avoid mak- ing the same problems.更多还原