在AT91RM9200开发平台，通过外接以太网控制芯片和以太网接口，实现TCP-IP协议和以太网通讯，可通过PC机Ping到该开发板，并可通过串口动态设置开发板的IP地址-In the AT91RM9200 development platform, through an external Ethernet controller and Ethernet interface, to achieve TCP-IP protocol and Ethernet communications, PC-P