基于ARM的以太网接口电路设计

Design of Ethernet Interface Circuit Based on ARM

阐述了基于ARM处理器LPC2294的嵌入式系统的以太网接口电路的设计,针对当前嵌入式研究领域的技术热点,实现了以太网功能在嵌入式系统上的开发与应用.详细介绍了ARM处理器的硬件设计,LPC2294与以太网控制器RTL8019AS的接口电路设计和以太网传输层的UDP协议、TCP/IP协议的软件设计流程,以及系统的通信调试过程.ARM处理器与RTL8019AS通过外部数据总线连接,具有非常好的实时性和可靠性,很好地实现了嵌入式系统的以太网功能.

The design of Ethernet interface circuit in the Embedded system based on ARM processor LPC2294 is expatiated. Through studying the current hot technology in the domain of Embedded technology, the exploitation and application of the Ethernet technology on the Embedded system are realized. The involved technologies include such as the hardware design of ARM processor, the interface circuitry design of LPC2294 and the Ethernet controller RTL8019AS, UDP protocol of Ethernet transport layer, software design flow of TCP/TP, and the process of system communications debugging are introduced. The ARM processor is connect- ed with RTL8019AS via exterior data bus to have excellent real time and dependability, and the Ethernet function of Embedded system is implemented.