高速数字电路设计中反射的影响及其抑制方法

The Influence and Elimination Method of Reflections in High-Speed Digital-Circuit Design

主要研究了高速数字电路设计中信号反射的抑制方法。理论上分析了信号反射产生的原因及其对电路设计指标的影响 ,通过电路仿真 ,比较不同的布局布线和端接策略 ,并针对具体情况 ,提出了合理的布局布线和端接方法。该方法已成功应用于多DSP并联处理系统中 ,实践证明该方法可靠。

This paper studies the elimination method of reflections in high-speed digital-circuit design. The cause and influence of reflections of high-speed digital signal are analyzed. All kinds of termination techniques and board layout are compared and simulated. The proper termination technique and board layout are promoted according to circumstances. The multiprocessing DSP system which employed proper terminations has been proved stably and reliably.\;