基于AS1773协议的突发同步设计

采用时分多址协议的光网络中, 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。基于对异步传输模式——无源光网络的研究，提出了对AS1773协议的突发同步设计。采用了高速现场可编程门阵列的方式实现20 Mbps突发同步器，简化了电路的设计，相对于传统的专用集成电路设计方案设计方案，具有开发成本低、开发周期短的优点。
关 键 词 AS1773总线; 总线控制器; 突发同步; 远程终端
Abstract This paper Burst mode synchronization is a key techno logy in passive optical network that utilizes time division multi access (TDMA) with single mode fiber. For the clock recovery in burst mode transmission, a burst mode synchronizer using keyword detection based on multiphase clock is usually used. In this article, based on research in asynchronous transfer moder-passive optical network, author described a method to design burst synchronizer in AS1773 protocol. This synchronizer is implemented by field programmable gate array, which can achieve high performance with low cost, short developing period.
Key words AS1773; bus controller; burst synchronization; remote terminal