PCB Layout And SI Technique Of High-Speed Digital Design Based On High Performance Embed Computer System

In today's high-speed digital systems, it is necessary to treat the printed circuit board traces as transmission lines. It is no longer possible to model interconnects as lumped capacitors or simple delay lines, as could be done on slower designs. This is because the timing issues associated with the transmission lines are becoming a significant percentage of the total timing margin. Great attention must be given to the construction of the PCB so that the electrical characteristics of the transmission lines are controlled and predictable.The paper describes an example of multiprocessor,and introduce the basic transmission line structures typically used in digital systems and present basic transmission line theory,then introduce some PCB layout skills and technique with the help of EDA tool,which can realize the product's superexcellent performance.