Case Studies in P&R Double-Patterning Debug

In my last article, we looked at some case studies of the unique types of issues related to double patterning (DP) that place and route (P&R) and chip finishing engineers have to deal with. I’ve got some more interesting case studies to show you this time. In modern P&R designs, the metal routes on a particular layer are unidirectional (or at least primarily unidirectional). Long p... » read more