异步FIFO是一种先进先出的电路，使用在需要产时数据接口的部分，用来存储、缓冲在两个异步时钟之间的数据传输。- Asynchronous FIFO is the electric circuit which one kind advanced leaves first, uses when needs to produce data interface s part, uses for to save, the cushion between two asynchronous clock s data transmissions.