Delay and crosstalk simulation of high-speed VLSI interconnects with nonlinear terminations

A method is presented for analysis of VLSI interconnects which contain both lossy coupled transmission lines and nonlinear components. An equivalent time domain macromodel is derived for the lossy coupled transmission line. The macromodel takes the form of a set of ordinary differential equations. The method takes full advantage of the asymptotic waveform evaluation technique which offers two to three orders of magnitude speedup relative to other methods with comparable accuracy. Computational results are presented for two examples: an interconnect circuit which contains lossless transmission lines and nonlinear components and a circuit consisting of two lossy coupled transmission lines.<>