基于AVR的VoIP数据传递设计

AVR Microprocessor-based Design of VoIP Terminal

基于互联网的VoIP业务,也就是所谓的IP电话,它是一种新的数字传输技术。文中提出了基于AVR处理器的模块化结构设计方案,并具体介绍了CPU和外设模块的接口和实际芯片的选择,描绘了VoIP的原理,整个系统组成,硬件结构设计,外围配置电路,系统软件设计,特别是修改了uIP协议栈的移值,以及终端具体实现过程。基于功能的模块化设计结构清晰,接口方案易于搭建,实时性好,可靠性高。

Internet VoIP service, the so-called IP telephone, is a new digital transmission technology, and with this technology, the user＇s communication cost would be greatly reduced. This paper brings forward AVR processor-based modular design scheme, presents CPU and the peripheral modules interfaces and actual chip choice, tells of the principle, system composition, the hardware structure designs, peripheral configuration, system software designs of VoIP, especially the transplant of revised uIP protocol stack, including concrete implementation of the terminal. Owing to the functional modularization, the scheme is discernable in construction, easily-builtin interface, good in real-time performance and high in reliability.