【摘要】 采用DSP芯片和网卡接口控制芯片ENC28J60设计以太网控制器,介绍了采用标准SPI串行接口的新型独立以太网控制器ENC28J60的特点以及与外部接口的硬件电路设计,分析了嵌入式TCP/IP协议的选取原则,DSP芯片对网卡接口控制芯片的控制过程和TCP/IP协议处理数据包的流程.该系统可以将数据按网络协议处理,实现数据的以太网传输.更多还原

【Abstract】 An Ethernet controller was designed with DSP chip and network interface controller ( NIC) chip ENC28J60. The features of stand-alone Ethernetcontroller ENC28J60 with SPI interface and the hardware design of its external interface circuit were demonstrated. The criterion for selection of embedded TCP/IP protocols was dis- cussed. The flowchart of control procedure of DSP chip over NIC and the TCP/IP protocol processing data package was also presented. The system can process the data according to network protocol so as to realize the transmission of the data through Ethernet.更多还原