通訊8B/10B解碼

代码说明：

這是一般通訊介面會採用的8B/10B 解碼, 應用在光纖通訊, Serdes上均有廣泛應用 /* Module Description:  This module implements a 8b10b decoder according to the original patent work  of Widmer and Franaszek.  It is a synchronous module with registers on the input  and output.  It takes in a 10-bit 8b10b encoded word, and outputs and 8-bit data  word and a control bit to indicate if the 8-bit output data is one of 12 special  K-codes.  */