摘要
本文根据数据恢复时,本地时钟与输入数据之间的相位关系及其实现方式的不同,将高速时钟与数据恢复(CDR,Clock and Data Recovery)电路技术分为三类,也即前馈相位跟踪型,反馈相位跟踪型,以及盲过采样型。进而又分别对每一类型进行了细分并分别进行了深入的剖析和比较。最后又给出了不同应用环境下,CDR技术的选择策略,并指出了CDR技术的发展趋势。本文通过对高速CDR技术详尽而又深刻的分析比较,勾勒出了一个高速CDR技术的关系及发展演化图,使读者能够对现存的高速CDR技术及其发展趋势有一个前面而又清晰的认识。
According to the difference of the phase relationship and stage of data recovery, the clock and data recovery (CDR) circuit implementation between local clocks and input data at the techniques are classified into three types: a feed-forward phase tracking type, a feedback phase tracking type, and a blind oversampling type. And then, each type is subclassified, analyzed and compared detailed and deeply. Finally, the CDR choice strategies are given under different environments, and the development trends of high-speed CDR techniques are also proposed. By thorough analysis and comparison, the technique relationship and evolvement of high-speed CDRs are outlined, which will help readers with a complete and clear insight into the existing high-speed CDR techniques and their development trends.
出处
《电路与系统学报》
CSCD
北大核心
2012年第3期60-65,共6页
Journal of Circuits and Systems
基金
863计划项目(2007AA01Z2a5)
国家自然科学基金项目(61076073
60806027)
高等学校博士学科点专项科研基金项目(20090092120012)
江苏省教育厅自然科学基金项目(09KJB510010
10KJB510015)
电子薄膜与集成器件国家重点实验室开放基金项目(KFJJ201011)
南京邮电大学引进人才科研启动基金项目(NY211016
NY210075)
关键词
时钟与数据恢复
前馈相位跟踪型
反馈相位跟踪型
盲过采样
锁相环
clock and data recovery
feed-forward phase tracking type
feedback phase tracking type
blind oversampling type
phase-locked loop