1. Track are nothing but routing grids; 2. P R tools will use these tracks for routing.........standard cells are coming in diffrents tracks like 7 track 9 track 12 track. 7 tracks means we have 7 tracks available for routing. 3. If u increase the track ur cells will be faster but will consume m ...
1、incr只能加减整数; 2、int(num)将num转化为整数; 3、在应用变量之前,要初始化; 4、变量不再使用了,unset是一个好习惯; 5、{}里不能进行替换,但" "里则可以。如 set s Hello puts stdout "The length of $s is ."   ...
Blackboxes are a light weight representation of a block, containing boundary timing constraints and physical boundary info. Since they don't actually contain any functional information they require very little memory allowing the creation of timing budgets of our 28 M gate chip on a 32 GB mach ...