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Robust and accurate hierarchical floorplanning with integrated global wiring

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2 Author(s)
Lengauer, Thomas ; German Nat. Res. Center for Comput. Sci., St. Augustin, Germany ; Muller, R.

Many popular floorplanning methods are based on circuit partitioning. Besides effectiveness, their main advantages are the easy handling of flexible cells and the ability to incorporate global wiring in a straightforward manner. Several proven approaches to partitioning-based floorplanning and hierarchical global wiring are unified and enhanced with new ideas. The result is a robust algorithmic framework for floorplanning with integrated global wiring that incorporates a new efficient sizing method for cut trees of arbitrary degree, an accurate procedure for wiring area estimation, and a method to select a suitable floorplan topology using a systematic optimization procedure that integrates floorplanning and hierarchical wiring. Experiments with a prototype implementation called the FRODO-system prove the effectiveness of this approach

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Computer-Aided Design of Integrated Circuits and Systems, IEEE Transactions on  (Volume:12 ,  Issue: 6 )