基于UART的可靠通信与性能分析  

UART-based Reliable Communication and Performance Analysis

作　　者：胡立坤[1] 王庆超[1] 

机构地区：[1]哈尔滨工业大学航天学院,哈尔滨150001

出　　处：《计算机工程》2006年第10期15-17,21,共4页Computer Engineering

基　　金：国家自然科学基金资助项目(60274002)

摘　　要：分析了基于UART总线型拓扑的可靠性连接和单主多从、令牌、多主对等系统的实现方案。从3个方面研究了通信性能,UART的接口与传输线特性决定了系统的最高通信速率;基于UART位串时槽研究了重新校准波特率的最大时间;基本UART的协议相关分析表明,衡量通信效果应从协议的效率、传输线的“忙闲”程度、数据理解率和时态特性几个方面分析。To establish a reliable UART-based bus network, some connection proposals are presented and analyzed. Three alternatives of the bus topology are given to establish the communication. Communication performance is individually researched from three aspects. UART＇s interface and wire properties determine the highest baudrate. The transmission-related analysis shows that the baudrate-recalibrated time is determined by two aspects that are the inter-slot condition and the intra-slot condition. The protocol-related analysis shows that the communication effect is scaled by four aspects, which are start-stop protocol efficiency, wire＇s ＂busy/idle＂, data understanding rate, temporal characteristics.

关 键 词：UART 可靠通信 通信性能 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]