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以ＤＭＡ传输技术和ＦＩＦＯ存储器为核心，探讨了适用于高速数据传输的Ｉ／Ｏ接口卡的设计方法。提出了接口卡在硬、软件方面的具体实现方案。最后给出了该接口卡在视频点播（ＶＯＤ）系统中的应用实例。
With DMA transfer technology and FIFO memory as the core, the design method of I / O interface card suitable for high speed data transmission is discussed. Proposed the interface card in hardware and software aspects of the specific implementation. Finally, the application example of the interface card in video on demand (VOD) system is given.