With the rise of clock frequency in a system and the sharpened edge of signals,the effect of interconnection of traces on a print circuit board and electric characteristics are becoming important.When the frequency exceeds 50 MHz,electric characteristics,component layout,high-speed signal traces and other factors should also be considered in system evaluation.Signal integrity has become one of the most necessary aspects during the process of high-speed design.The theoretic explanation of crosstalk is introd...