| Popis: |
In signal integrity analysis, the joint effect of propagated noise through library cells, and of the noise injected on a quiet net by neighboring switching nets through coupling capacitances, must be considered in order to accurately estimate the overall noise impact on design functionality and performances.In this work a general macromodel that considers the impact of the cell non-linearity on the noise glitch waveform is proposed, and a new approach that allows to accurately and efficiently modeling the cell non-linear effects in Static Noise Analysis is presented. Experimental results confirm that existing noise analysis approaches based on linear superposition of the propagated and crosstalk-injected noise can be highly inaccurate, thus impairing the sign-off functional verification phase, and demonstrate the effectiveness of our method that can be seamlessly integrated into noise analysis tools. |
