cpos光接口板驱动的设计和优化-计算机科学与技术专业毕业论文.docx

北京邮电大学硕士研究生论文 CPOS光接口板驱动设计与优化
摘要
数据通信是目前发展最迅速的通信业务之一,SDH/光通信网络以其高速率高性能,在当今的通信网络中被广泛采用。CPOS Router数据接入设备是专为用于利用STM-I SDH信号中的低速插入信号VCl2,实现2M/S E1数据在广域网上的汇聚,面向TCP/IP的远程数据网络接入和互联设备。
本人参与了万林克通信技术有限公司的CPOS路由器产品的开发和升级项目,完成更高版本的CPOS驱动程序移植以及优化了驱动软件模块,取得了很好的效果。
本论文在简单引入课题背景及工作内容之后,介绍了CPOS板卡的硬件架构和产品的软件总体结构;同时对于CPOS模块硬件用到的
几款芯片,在这里也进行了简单的介绍。
论文第二部分为本课题的主体部分,分为三个章节。第一个章节为CPOS驱动模块的设计与实现,从设计原则和设计方案两方面详细介绍了CPOS板卡相关的软硬件结构。对系统功能实现中的几个主要过程进行了重点阐述,采用流程图的方式阐明了处理流程。第二个章节为CPOS驱动模块的优化,分析原有V42系统的不足,公司开发出了V62系统,本人根据CPOS驱动的特点并结合V62系统,在V62新的软件体系结构下,对CPOS驱动模块进行了优化改进。论文详细介绍了系统实现部分,阐明了升级程序的特点。最后一个章节简单介绍了一下功能测试并列举了一些常见问题,并提出了解决方法。
关键宇:CPOS,STM一1,描述符,流程图
北京邮电大学硕士研究生论文 CPOS光接口板驱动设计与优化
IMPLEMENTATIoN AND o盯IMIZATIoN oF CPoS oI.,rICAL INTERFACE BoARD DRIVER
ABSTRACT
Data Cornmunications is one of the fastest munication operations at of higll data rate and high performance, SDI-I/works is widely used in Router data access equipment is a long-range work aCCesS and connect equipment implementing lower signal vcl2 inserted to stm-I signal plete the
of assembling 2M/s E1 data on long-range work.
In the past two years,I participated in CPOS Router product design and upgrade project,plished CPOS drive program naturalization under higher software version and optimaization of drive software structure,then acquired good
effect.
After a simple import of the paper’S background and work content,the paper introduces t11e basic structure of hardware and software, functions of some
important modules and the chips used by CPOS hardware.
111e second part is the paper’S main consists first
one is design and implementation of CPOS introduces the system’S software and hardware structure in detail through design principle and design scheme, expounds some main processes in system function implementation and process flow
by flow second chapter is optimization of CPOS driver
analyzing the shortage of primary V42 system