本文提出了一种基于SOPC的LED网络控制器的设计方法。采用FPGA+SRAM+PHY/MAC的结构，构建了网络控制器硬件平台。采用软硬件协调设计理念，通过添加NiosII自定义外设IP软核、利用FPGA和外部SRAM构建大容量FIFO以及优化网卡驱动程序，实现TOE和RDMA功能，从而提高网络控制器的带宽、保证LED屏画面流畅。系统测试表明,控制器性能稳定，NiosII工作在50MHz时,网络控制器接收UDP数据的带宽为60Mbps。

This paper presents a design method of the LED network controller based on SOPC. Using a FPGA+SRAM+PHY/MAC structure,we build the network controller hardware platform.Using the concept of software and hardware coordinated design,we define the peripheral IP soft core through adding NiosII,and we construct a large capacity FIFO using FPGA and exterior SRAM as well as optimizing the network card driver,hence realizing TOE and the RDMA function and enhancing the network controller's band width as well as guaranteeing that the LED screen picture is smooth.System tests show that the controller works steadily;NiosII works in the frequence of 50 MHz, and the bandwidth of the network controller's receiving UDP data is 60 Mbps.