In order to achieve Ethernet data communication between DSP and peripheral devices,a mde of DSP Ethernet interface based on network control chip DM9000A was adopted. Taking TMS320F28335 DSP of TI and network control chip DM9000A as hardware platform,DM9000A internal registers is controlled with DSP bus to complete DM9000A initialization and the underlying Ethernet data transceiving. The Ethernet data communication functions suitable for DSP devices were achieved by simplifying TCP/IP protocol,including IP,ARP,ICMP,UDP,TCP protocols,etc.%为了实现DSP与外围设备进行以太网数据通信，采用了一种基于网络控制芯片DM9000A的DSP以太网接口实现方式。它以TI公司的DSP处理器TMS320F28335和DM9000A网络芯片为硬件平台，通过DSP总线控制DM9000A内部寄存器，完成DM9000A的初始化以及底层以太网数据的发送接收，并对TCP/IP协议进行裁剪，包括IP，ARP，ICMP，UDP和TCP等协议，实现了适用于DSP设备的以太网数据通信功能。
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