Wire delay models for global placement of ASICs

Abstract

A new model for the propagation delay between two logic gates for timing-driven global placement is proposed. The model is a function of the number of pins on the net, the half perimeter of the bounding box enclosing the net, and the half perimeter of the bounding box enclosing the driving pin and the sink pin. On a training set of two designs and testing set of another two, the proposed model is 31% more accurate than the current state-of-the-art model and has comparable computational complexity.