关键词: LED, 网络, NiosII, SOPC

Abstract:

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.

Key words: LED;network;NiosII;SOPC