Improved analytical delay models for coupled interconnects

With the advance of the process technologies into deep sub-micrometer domain, crosstalk between adjacent wires of global interconnects has become more severe. The delay caused by the crosstalk becomes a bottleneck to system performance, especially those with global interconnects. To alleviate crosstalk delays, accurate delay models are needed. In particular, analytical models are more desirable for their simplicity and transparency to technology, which lead to efficient crosstalk avoidance code (CAC) designs. Currently, most existing CAC designs are based on the analytical model proposed by Sotiriadis et al., which has limited accuracy. In this paper, we propose new analytical delay models, and our extensive simulations show that they have improved accuracy.