通过1000BASE-T以太网进行时钟分配和同步

IEEE Nuclear Science Symposuim & Medical Imaging Conference Pub Date : 2010-12-01 DOI:10.1109/NSSMIC.2010.5874287

J. Imrek, G. Hegyesi, G. Kalinka, J. Molnár, F. Nagy

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引用次数: 2

摘要

我们报告了在1000BASE-T(千兆双绞线)以太网上基于同步以太网的时钟分布和时间戳同步实现。中央125 MHz全局时钟仅使用商用现成组件分配到所有检测器模块。在不同模块上生成的时间戳具有24-60 ns的最大固定偏移(取决于测试的开关)，以及小于500 ps的抖动(没有使用时钟清洁器IC)。

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Clock distribution and synchronization over 1000BASE-T Ethernet

We report on a Synchronous Ethernet based clock distribution and timestamp synchronization implementation over 1000BASE-T (Gigabit over twisted pair) Ethernet. A central 125 MHz global clock is distributed to all detector modules using only commercial off-the-shelf components. The timestamps generated on different modules has a maximum fixed offset of 24–60 ns (depending on the switch tested), and a jitter of less than 500 ps (with no clock cleaner IC being used).

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IEEE Nuclear Science Symposuim & Medical Imaging Conference

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