基于FPGA的高速大容量存储与传输系统

High speed and large capacity storage and transmission system based on FPGA

随着采集技术的发展,采集的精度及数据量越来越大,对数据存储及传输也提出了更高的需求。为解决嵌入式系统采集速度快、实时性强等问题,设计了将现场可编程门阵列(FPGA)、NAND Flash及千兆以太网PHY芯片VSC8641相结合的数据传输系统,通过对Flash的流水线存储模式及千兆以太网传输技术进行深入研究,实现了高速Flash控制器的设计及基于UDP、IP协议的以太网帧格式的全双工模式组包与解包。并在自主研发的硬件平台上验证了该方案能够将采集到的数据高速存储到Flash中,并稳定、高速地回传到PC机中进行处理。

With the development of acquisition technology, the accuracy of acquisition and the amount of data are getting larger and larger, and higher demand is put forward for data storage and transmission. In order to solve the problems of fast acquisition speed and strong real-time performance of embedded system, this paper designs a data transmission system that combines field programmable gate array(FPGA), NAND Flash and Gigabit Ethernet PHY chip VSC8641. Through in-depth research on the pipelining storage mode of Flash and Gigabit Ethernet transmission technology, the design of high-speed Flash controller and the full duplex mode grouping and unpacking of Ethernet frame format based on UDP and IP protocol are realized. And on the hardware platform developed by ourselves, it is verified that the scheme can store the collected data in Flash, and transmit it stably and high-speed to PC for processing.