系数为4的扰码生成器，并每四位扰码产生一个触发串并转换的触发信号，可用于4b/5b编码的触发信号。verilog程序，带test程序-coefficient of the four scrambler generator, and every four scrambler have triggered a string conversion and the trigger signal can be used to trigger 4b/5b coding signal. Verilog pro