采用時分多址協議的光網絡中, 突發同步是一項關鍵技術, 一般采用基于多相時鐘的關鍵字檢測法。基于對異步傳輸模式——無源光網絡的研究，提出了對AS1773協議的突發同步設計。采用了高速現場可編程門陣列的方式實現20 Mbps突發同步器，簡化了電路的設計，相對于傳統的專用集成電路設計方案設計方案，具有開發成本低、開發周期短的優點。
關 鍵 詞 AS1773總線; 總線控制器; 突發同步; 遠程終端
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