基于AT91RM9200的IP网关设计

The Design of IP Gateway Based on AT91RM9200

本文介绍一种ARM920T系列高性能嵌入式控制器AT91RM9200实现高速IP网关设备的设计方法。重点分析了同步串口SSC与E1成帧器时序关系、信号连接和协议转换要求,实现了低成本、高可靠性的两路E1与10/100Mbps以太网接口的转换。

This paper presents the design method of high- speed IP gateway facility with the ARM920T series high performance em- bedded controller AT91RM9200. The key points are the analyses of the timing relationship, signal connection and the protocol ex- change requirements between the synchronous serial SSC and E1 framer. It achieved the conversion between the two- channel E1 and 10/100Mbps Ethernet interface with low cost and high reliability.