Early Global Route

Routing congestion in VLSI explained for physical design engineers: how global routers measure GCell capacity, demand and overflow, cell density vs pin density, global, local and layer congestion, floorplan, logic and placement causes, fixes with halos, partial blockages and cell padding, the timing impact, a debugging flowchart and interview Q&As.

Understanding the Performance (Timing) Before going to understand the performance (timing), lets understand how timing is getting checked. At placement stage we have the placement of cells information, but we don’t have connection information in between the cells so how the timing analysis will be, and which layers will help complete routing. As we know […]