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在采用 TDMA协议的无源光网络中 ,突发同步是一项关键技术 ,一般采用基于多相时钟的关键字检测法。本文提出了一种新颖的基于数据延时的突发同步技术 ,采用了高速 FP-GA和 ECL有源延时器的方式实现 1 55Mbit/s突发同步器。由于采用同一主时钟对数据抽样 ,不需要进行相位校准 ,简化了电路的设计 ;相对于传统的 ASIC设计方案 ,该方案具有开发成本低、开发周期短的优点
In the passive optical network using TDMA protocol, burst synchronization is a key technology, generally based on multiphase clock keyword detection method. In this paper, a novel burst synchronization technique based on data delay is proposed. A high-speed FP-GA and ECL active delay method is used to realize a 1 55 Mbit / s burst synchronizer. Because the same master clock is used to sample the data, phase calibration is not needed, which simplifies the circuit design. Compared with the traditional ASIC design scheme, this scheme has the advantages of low development cost and short development cycle