improved crosstalk modeling for noise constrained interconnect optimization
This paper presents a much improved, highly accurate yet efficient crosstalk noise model, the 2-pie model, and applies it to noise-constrained interconnect optimizations. Compared with previous crosstalk noise models of similar complexity, our 2-pie model takes into consideration many key parameters, such as coupling locations (near-driver or near-receiver), and the coarse distributed RC characteristics for victim net. Thus, it is very accurate (less than 6\% error on average compared with HSPICE simulations). Moreover, our model provides simple closed-form expressions for both peak noise amplitude and noise width, so it is very useful for noise-aware layout optimizations. In particular, we demonstrate its effectiveness in two applications: (i) Optimization rule generation for noise reduction using various interconnect optimization techniques; (ii) Simultaneous wire spacing to multiple nets for noise constrained interconnect minimization.
crosstalk model noise interconnect optimality paper efficiency complexity couples locatability distributed errors simulation express layout demonstrate effect applications generation reduction minimal