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In PCB designs, pin positions greatly affect routability of the design. State-of-the-art pin assignment algorithms are guided by simple (heuristic) metrics to estimate routability and thus have no guarantee to obtain a routable solution. In this paper, we present a novel approach to obtain a pin assignment solution that guarantees routability. We show that the problem of simultaneous pin assignment...
Escape routing is a critical problem in PCB design. In IC-CAD'07, a layer assignment algorithm was proposed for escape routing of buses. The algorithm is optimal for single layer design in the sense that it determines if a set of buses can all be escaped on one layer. If they cannot, the algorithm is able to select a maximum subset of the buses that can be escaped on one layer. This, in turn, leads...
Since no commercial PCB routing tools can solve the routing problem for today's complex PCBs, these circuit boards have to be routed manually, taking about 2 months of time per board. Bus planning is one of the most time-consuming steps of PCB routing. It consists of assigning buses to multiple layers of the PCB and routing them in a planar fashion on each layer. Routing congestion between on-board...
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