Diva遇到麻烦!求救!
录入:edatop.com 阅读:
验证规则里有这样的语句:
checkPullUp( )
checkPullDown( )
/* Checks all nets for a path from the net through devices to nets
identified as power nets. Then checks all nets for a path from
the net through devices to nets identified as ground nets. */
两个语句的解释相同的,那两者究竟有什么区别?这两句话有什么用,是防止什么情况发生呢?
checkPullUp( )
checkPullDown( )
/* Checks all nets for a path from the net through devices to nets
identified as power nets. Then checks all nets for a path from
the net through devices to nets identified as ground nets. */
两个语句的解释相同的,那两者究竟有什么区别?这两句话有什么用,是防止什么情况发生呢?
第一句对应的是第一个check rule
第二个。
你可以看看candence diva 的user manual
其实是检查上拉和下拉,一般是PAD上的结构
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