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论文大纲，目录 |
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论文题目：4×155M路由器POS线卡STM-1接口模块的设计与实现
摘要
目前IP over SDH（又称Packet Over SDH，POS）技术是主干网上主流的IP传输技术之一，因此与主干网连接的高端路由器需支持POS接口，155.52Mbit/s STM-1 POS接口是其中最常见的接口类型之一。4×155M POS线卡是能同时提供4个并列的STM-1 POS接口的线卡，本文给出了该线卡中实现这4个接口的模块设计。
本文首先给出了4×155M POS线卡STM-1接口模块的方案分析并进行了相应的器件选型，其中器件选型中多方便因素的分析对于系统设计具有一定的参考意义；然后本文介绍了该模块的整体设计，文中有关整体设计中的分析具有很好的参考价值；此后本文给出了该模块的详细设计，包括电路设计、FPGA设计和软件设计，除了设计内容本身具有一定的参考价值外，其中许多问题的解决方法也有可取之处，例如电路设计中器件模拟部分及数字部分的隔离处理、FPGA I/O管脚定义的措施，FPGA设计中多端口共用一个传输通路时的调度算法设计、双倍速率ZBT SRAM接口的设计、CPU接口的设计等；最后本论文介绍了该模块的调试及测试工作，从而使得设计工作与调试及测试工作有效地相结合。
【关 键 词】STM-1，OC-3， POS，SDH，线卡，路由器
【论文类型】应用研究
Title :Design and Implementation of The STM-1 Interface
Module of 4×155M POS Line Card for Router
Major :Communication and Information System
Author :Hir Nalyoung Signature
Advisor :Zhang Chuansheng Signature
Abstract
IP over SDH (also called Packet over IP，POS) is one of the most widely used IP transfer approaches in IP trunk networks. Routers connected to IP trunk networks need to support POS interfaces among which 155M bit/s STM-1 POS interface is one of the most widely used types. 4x155M POS line card in a router can provide such 4 STM-1 POS interfaces. This thesis provides the design and the implementation of the STM-1 interface module of such line card.
Firstly the thesis provides the scheme analysis of STM-1 interface module for the 4x155 POS line card and the hardw无忧论文 【http://www.uklunwen.com】are parts selection. The comments on the selection is useful for a hardware design. Secondly the thesis introduces the analysis of the global design over the hardware parts selection. Many of the advices is very useful for a system design. Thirdly the thesis introduces the detail implementation of the design including the circuits designing, the FPGA designing, the software programming. Not only the content of these is useful, but also the solutions to many problems is valuable such as the solution for the isolation of the analog part and digital part of circuits, advices on tracing of complicated pins parts when in circuits designing, the scheduling mechanism over the selection of multi-ports sharing single data path, double data rate ZBT SRAM interfaces designing, CPU interface designing in FPGA, etc. Finally the thesis introduces the work on debugging and testing, which makes the thesis self-contained.
[Key Words ]STM-1,OC-3, POS,SDH, line card,router
[Thesis Type]Application research
目录
第一章 绪论………………………………………………………………...1
1.1 课题背景及意义……………………………………………………1
1.1.1 背景…………………………………………………………….1
1.1.2 意义…………………………………………………………….1
1.2 论文的工作…………………………………………………………2
1.3 论文的章节安排……………………………………………………2
第二章 POS基本原理及路由器设计中的相关技术……………………...3
2.1 POS基本原理……………………………………………………….3
2.1.1 SDH网络及SDH帧结构………………………………………3
2.1.1.1 SDH网络…………………………………………………...4
2.1.1.2 SDH帧结构………………………………………………..4
2.1.2 POS基本原理………………………………………………….6
2.1.2.1 PPP帧的结构……………………………………….……. |
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