一种用HT协议实现光纤传输的数据转换结构  

A data conversion structure for optical fiber transmission using hyper-transport protocol

作　　者：梁华岳 胡伟武[1,2,3] 

机构地区：[1]中国科学院计算技术研究所计算机体系结构国家重点实验室,北京100190 [2]中国科学院大学,北京100049 [3]龙芯中科技术有限公司,北京100190

出　　处：《高技术通讯》2015年第6期561-566,共6页Chinese High Technology Letters

基　　金：国家科技重大专项(2009ZX01028-002-003;2014ZX01020201;2014ZX01030101);国家自然科学基金(61133004;61173001;61232009;61222204;61432016)资助项目

摘　　要：进行了将Hyper Transport(HT)协议用于处理器光纤互连系统的研究,针对现有的处理器互连协议接口不能直接连接光纤传输系统的问题,设计了一种可配置的数据转换结构。该结构通过特定的3B/4B编码模块和相应的并转串电路,将原HT协议数据格式转换成适用于光纤互连的数据格式。该结构的特点是数据格式可配置,编码简单,电路可复用,直流电流平衡性能高,对传输协议透明和适于高速逻辑实现。该结构的提出解决了处理器光纤互连过程中遇到的并行总线多、单路速率低、电流不平衡等问题,为处理器光纤互连提供了简捷的解决方案。采用此方案解决处理器光纤互连的数据格式问题尚属首次。The study of applying the hyper transport （HT） protocol to the processor systems using optical noer mterconnection was conducted, and a configurable data conversion structure was designed to solve the problem that the existing interfaces based on the processor interconnection protocol can not be connected directly to optical fiber transmission systems. This data conversion a structure converts the original HT protocol data to the format suitable for optical fiber transmission by using a special ad-hoc 3B/4B decoding module and the corresponding circuit for parallel-series conversion, with the features of data format configurable, coding simple, circuit reusable, well DC-Balance, trasparent to the transmission protocol, and suitable for high frequency logic implementation. The design of the structure resolves the problems of huge amount of parallel buses, low data rate for single channel and unbalance of DC current during the optical fiber transmission, providing a state-of-the-art solution of data format convertion for the optical fiber interconnection of processor systems.

关 键 词：处理器 光纤互连 3B/4B编码 数据转换 

分 类 号：TN929.1[电子电信—通信与信息系统]