使用Altera芯片实现对4个SAA7111A视频A/D芯片的采集控制，将图像数据存入同步FIFO-AL422B-use Altera chip to 4 SAA7111A Video A / D chip to control the collection, image data are stored in synchronous FIFO - AL422B

ad9628配置，给出了spi配置接口的时序描述。设计中需要例化altera的fifo。(ad9628 configure with spi configuration timing,and there is a QuartusII fifo in the design.)