基于FIFO的高速A/D和DSP接口设计

〖FQ(27,X,DY-W〗Design of Interface Between High Speed A/D and DSP Based on FIFO

在DSP高速数据采集系统中,DSP往往不能适应A/D芯片的工作速率。为了提高DSP的工作效率,避免数据的丢失和方便控制,用FIFO作为两者之间的接口可以产生很好的效果。介绍了用FIFO器件CY7C4261实现A/D芯片AD9283和DSP芯片TMS320VC5416之间接口的方法,详细分析了数据从A/D送至DSP的整个过程。实际设计及应用表明该接口提高了DSP的使用效率,具有广阔的应用前景。

In high speed data collection system, sometimes the sampling speed of A/D doesn＇t adapt to the working clock frequency of DSP. In order to increase the efficiency of DSP, avoid the lost of data and facilitate the control, FIFO is used as the I/O between A/D and DSP. This article introduces the technique that uses CY7C4261 as the interface between AD9283 and TMS320VC5416, and explains in detail the overall process of data transmission from A/D to DSP. In practice and application, this interface improves the efficiency of DSP and has good prospects.