摘要: 一,概念 在数字电路设计时,无论是组合、时序,还是FPGA电路中,都需要考虑竞争冒险现象(Race and Competition)。 竞争:由于信号在传输和处理过程中经过不同的逻辑门、触发器或逻辑单元时产生时差,造成信号的原变量和反变量状态改变的时刻不一致,这种现象称为竞争(Race)。 冒险:由 阅读全文
posted @ 2016-03-09 17:32 pengdada 阅读(4727) 评论(0) 推荐(0)
摘要: 转载 http://guqian110.github.io/pages/2014/09/23/latch_versus_flip_flop.html 根据 Wiki: Flip-flop (electronics) 上的介绍 In electronics, a flip-flop or latch 阅读全文
posted @ 2016-03-09 09:58 pengdada 阅读(15809) 评论(0) 推荐(1)
摘要: What makes an inferred latch?For combinatorial logic, the output of the circuit is a function of input only and should not contain any memory or inter 阅读全文
posted @ 2016-03-09 09:31 pengdada 阅读(973) 评论(0) 推荐(0)
摘要: A "latch" is different from a "Flip-Flop" in that a FF only changes its output in response to a clock edge. A latch can change its output in response 阅读全文
posted @ 2016-03-09 08:42 pengdada 阅读(241) 评论(0) 推荐(0)