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Crosstalk bounded uncorrelated jitter (BUJ) for high-speed interconnects

Publication Type:

Journal Article

Source:

IEEE Trans. Instrum. Meas. (USA), Volume 54, p.1800-10 (2005)

URL:

http://dx.doi.org/10.1109/TIM.2005.855101

Keywords:

crosstalk; integrated circuit interconnections; jitter; printed circuits

Abstract:

Bounded uncorrelated jitter (BUJ), a subcomponent of total jitter, is commonly caused by crosstalk coupling from adjacent interconnects on printed circuit boards (PCB). However, the characteristics of BUJ are still not well understood. Neither a mathematical model of jitter, nor an algorithm to generate histograms for BUJ has been developed to this date. Such a model and algorithm would empower designers to predict BUJ to achieve total jitter budget without lengthy simulations and measurements. In this paper, we first review the characteristics of a crosstalk pulse induced by an aggressor signal on a quiet trace. Then, by applying the superposition principle, a jitter model to calculate the time difference between the distortion-free and the distorted edge crossings of the victim signal was developed. This model is also extended to calculate the worst case timing difference, BUJp-p. In addition, an algorithm to generate the histogram distribution of BUJ is also developed. The developed algorithm has fast execution times of 10-20 s, compared to simulation and measurement times of 10-30 min