基于NiosⅡ的CF卡光盘码流数据记录系统

Optical disk data steam storing system based on Nios Ⅱ with CF card

连续数据存储已经越来越受到重视,针对其设计了一种基于NiosⅡ软核CPU的光盘码流数据存储记录系统,存储介质为CF卡。主要介绍了NiosⅡ的优势特点以及CF卡的结构,利用两片DPRAM设计了保证记录连续码流的输入输出模块,实现了读写硬件接口,完成了对CF存储卡扇区的读写操作,并充分发挥DMA传输的优势,实现了数据码流的传输和记录。

Continuous data storage technology is more and more regarded, and a data storing system for the optical disk is designed based on FPGA and Nios Ⅱ CPU. Its media is CompaetFlash card. The advantage of Nios Ⅱ and CF card＇s construction are introduced. With two DPRAM on the board, the system can memorize the data stream, and it can read and write the CF card, do the transmission between CF card and DPRAM through the Avalon bus using DMA technology.