| 基于DP83640硬件辅助的IEEE1588研究及实现 |
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| 引用本文： | 王康,胡永辉,何在民.基于DP83640硬件辅助的IEEE1588研究及实现[J].时间频率学报,2011,34(1). |
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| 作者姓名： | 王康 胡永辉 何在民 |
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| 作者单位： | 1. 中国科学院国家授时中心，西安 710600;中国科学院精密导航定位与定时技术重点实验室，西安 710600;中国科学院研究生院，北京 100039
2. 中国科学院国家授时中心，西安 710600;中国科学院精密导航定位与定时技术重点实验室，西安 710600 |
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| 基金项目： | 中国科学院“西部之光”人才培养计划资助项目(2008YB02);中国科学院“西部之光”人才培养计划“西部博士”资助项目(Y001YR5601) |
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| 摘 要： | 随着高精度时间同步的广泛应用,采用硬件辅助的IEEE1588协议已成为减少同步误差提高同步精度的理想途径。分析了DP83640物理层芯片的功能结构与IEEE1588时间同步基本原理,构建了以DP83640为主要组成部分的时钟同步功能模块,验证了同步过程。实验及分析表明,在局域网内采用DP83640硬件辅助的IEEE1588协议同步精度可达到纳秒量级。
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| 关 键 词： | IEEE1588 DP83640物理层芯片 时间同步 时间戳 |
Study and implementation of hardware-assisted IEEE1588 based on DP83640 |
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| WANG Kang,HU Yong-hui,HE Zai-min.Study and implementation of hardware-assisted IEEE1588 based on DP83640[J].Journal of Time and Frequency,2011,34(1). |
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| Authors: | WANG Kang HU Yong-hui HE Zai-min |
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| Institution: | WANG Kang1,2,3,HU Yong-hui1,HE Zai-min1,3(1.National Time Service Centre,Chinese Academy of Sciences,Xi'an 710600,China,2.Key Laboratory for Precision Navigation and Timing Technology,National Time Service Centre,3.Graduate University of Chinese Academy of Sciences,Beijing 100039,China) |
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| Abstract: | Along with extensive application of precise time synchronization,it has become an ideal way to adopt hardware-assisted IEEE1588 protocol for reducing synchronous error and improving synchronous precision.The functional structure of physical layer chip DP83640 and the basic synchronous principle for IEEE1588 protocol are analyzed in this paper.A time synchronous module with DP83640 as a major component has been constructed,and the synchronous process has been tested and verified.The experiments and analyses ... |
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| Keywords: | IEEE1588 DP83640 time synchronous timestamp |
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