程序是本人亲测，可实现fpga对ads804的高速数据采集，和输出。利用了fpga的fifo和ad芯片每六个时钟数据更新一次的原理-The program I pro-test, the FPGA the ads804 high-speed data acquisition and output. The principle of use fpga fifo and ad-chip is updated once every six clock data