The design scheme which USES FPGA as the main controller is presented in detail, including the internal interface of SDRAM, process of data transmission and realization of ping-pong operation.

Based on the ping-pong type field grounding protection, it presents one-point-to-ground protection scheme by integrating the self-checking method of switches.

In this article, we introduce the ping pong operation into the asynchronous FIFO design and provide a FIFO design scheme in FPGA.