Multilayer Global Routing With Via and Wire Capacity Considerations

12 years 11 months ago

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Global routing for modern large-scale circuit designs has attracted much attention in the recent literature. Most of the state-of-the-art academic global routers just work on a simplified routing congestion model that ignores the essential via capacity for routing through multiple metal layers. Such a simplified model would easily cause fatal routability problems in subsequent detailed routing. To remedy this deficiency, a more effective congestion metric that considers both the in-tile nets and the residual via capacity for global routing is presented. Experimental results show that our global router can achieve very high-quality routing solutions with more reasonable via usage.

Chin-Hsiung Hsu, Huang-Yu Chen, Yao-Wen Chang

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