基于IEEE1588协议的局域网精确时钟同步研究

Study on LAN High-accuracy Clock Synchronization Based on IEEE1588 protocol

文章首先介绍IEEE1588时钟同步基本原理,然后搭建了在ARM11微处理器S3C6410A下采用WinCE6.0系统的测试平台。在该测试平台下,给出了时钟同步的纯软件和硬件辅助设计,硬件辅助设计中采用了半导体芯片DP83640。经过测试,纯软件设计的时钟同步精度可达次毫秒级,而硬件辅助设计的时钟同步精度可达到次微秒级。

This article first introduces the basic principle of IEEE1588 clock synchronization and then set up a test platform based on the ARM11 microprocessor S3C6410A,using the WinCE6 system.Under this platform,this article provides software design and hardware assisted design for the clock synchronization.Hardware assisted design uses the semiconductor chip DP83640.According to test,the clock synchronization precision of the software design is sub-millisecond,however the clock synchronization precision of the hardware assisted design can reach the sub-microsecond.