PCI Express中8/10b编码器的设计

The Design of the 8/10 b Encoder Based on PCI Express

随着通信技术的发展,PCI Express的应用越来越广泛,但高速传输引起的信号质量劣化的问题随之产生,因此PCI Express引入了具有较高性能的8b/10b编码。8b/10b编码是一种面向字节的二进制编码,此种编码特别适合于高速通信领域中数据传输,基本特性是直流平衡,便于高频时钟信号的嵌入。本文在研究了PCI Express协议规范以及8b/10b编码原理的基础上,设计了面向PCI Express的8b/10b编码。

As the development of the Comunication technology,the PCI Express is more and more popular in application,but high speed of data transfer causes the deterioration of the signal quality,so8b/10b encoder with high encoding performance is adapted in PCI Express.8b/10b encoder is a kind of binary encoder facing to byte,which is specially fit to data transfer of high speed field,with baseful characreristic of DC balance,and it’s ease to embed high frequency clock signal in bit stream.This paper designs a kind of8b/10b encoder facing PCI Express after researching the PCI Express Spec and the principle of8b/10b algorithm.