Design Of High-Speed Data Playback System Based On FPGA

In radar system,with the increasing of sampling rate, the playback rate also need improve. Therefore, it's urgently to design a high speed playback system in a radar system. High speed playback system is not only playback the data which stored in storage medium, that provides experimental scene, reduce the human and material resources in field measurement, but also can generate the test data, simulate the real work environment, debug the equipment before using it.This subject introduces a playback system which based on serial switched network. The system apply the NAND Flash which has large capacity and nonvolatile memory to store the data. Through the RapidIO Switch Board to interconnect the Flash board and DAC board. The data transmits to FPGA chip through the two road of RapidIO when the Flash board received the doorbell, and then cache the data in FIFO, read the data from FIFO in turn and handle it with ODDR. Finally, process the FPGA chip and DAC chip synchronous with source synchronous and realized the continuous playback at1.2GB/s in one channel.This subjec firstly introduces the background of data playback system , the development situation and trend in presently, the key technology in how to design high speed playback system. Secondly, select the hardware board according the actual project and introduce the function and theory about hardware board, and writes FPGA program to control data flow. Finally, through the PC software to control the whole system, the data through the DAC interface playback to oscilloscope, through the oscilloscope analysis the whole system. After vivificating ,the system meet the playback requirements.