A unified approach to multilayer over-the-cell routing
S. Madhwapathy, Naveed A. Sherwani, Siddharth Bhingarde, Anand Panyam · 1994
Several Ov er-the-Cell (OTC) routing algorithms have been proposed for two and three layer processes.All the existing OTC routers can be used only on the cell models for whic h they were developed for.In this paper, we develop a uni ed approach t o m ulti-layer routing, motiv ated by o v er-the-cell routing, which can be used for full-custom la youts.Our approac h can also be directly applied to standard cell layouts, irrespective of the cell model used in the design.Our router has been implemen ted in C and tested on industrial benchmarks, suc h as PRIMARY I and PRIMARY I I , for which it obtained channel-less layouts.