基于eMMC阵列的高速大容量数据的存储设计  

Design of High-speed and Large-capacity Data Storage Based on eMMC Array

作　　者：叶聪相[1] 章增优[1] YE Congxiang;ZHANG Zengyou(Artificial Intelligence College,Zhejiang Industry&Trade Vocational College,Wenzhou 325000,China)

机构地区：[1]浙江工贸职业技术学院人工智能学院,浙江温州325000

出　　处：《计算机测量与控制》2021年第10期181-186,共6页Computer Measurement &Control

基　　金：温州市科技基金项目(N20170010)。

摘　　要：为实现对某飞行设备进行模拟飞行测试,需要对大量的飞行仿真数据进行快速存储,因此提出一种基于eMMC(embeded MultiMedia Card)阵列的高速大容量数据的存储设计;设计选用FPGA(field programmable gate array)作为逻辑控制核心,通过控制其内部IP核GTX(Gigabit Transceiver)实现与外部设备的通讯,为匹配数据的传输速率,采用缓存模块对GTX模块输出的并行数据进行缓存,依据缓存大小来控制eMMC阵列控制器模块对eMMC阵列进行写入;系统上电后,GTX模块及eMMC阵列控制器模块自动进入初始化流程,上位机通过RS422接口发送启动命令给FPGA,当FPGA检测到各模块初始化完成标志后,通过RS422接口上传指令回应帧并启动数据的采集存储;数据存储完成后,为验证数据传输存储的正确性,上位机发送读取命令对数据进行回读;经验证,回读数据正确,无丢帧错帧的现象,数据传输稳定可靠,数据存储速率为2.4 Gbps;系统设计正确,为模拟飞行测试提供了可靠的保障。In order to realize the simulation flight test of a flight equipment,it is necessary to store a large amount of flight simulation data quickly,so a design of high-speed and large-capacity data storage based on eMMC(emded MultiMedia Card)array is proposed.The design uses FPGA(field programmable gate array)as the core of logic control,It communicates with the peripheral equipment by controlling its internal IP core,the GTX(Gigabit Transceiver).in order to match the data transfer rate,the parallel data output from GTX module is cached by cache module,and eMMC array controller module writes eMMC array according to the size of cache.When the system is powered up,the GTX module and eMMC array controller module enter the initialization process automatically,the host computer sends the Startup instruction to the FPGA through the RS422 interface.When the FPGA detects the completion of the initialization of each module,it uploads the instruction to respond to the frame through the RS422 interface and starts the data acquisition and storage.After the data storage is completed,in order to verify the correctness of the data transmission and storage,the upper computer sends a reading instruction to read back the data.It has been verified that the data read back is correct,there is no loss of frame error,the data transmission is stable and reliable,the transmission rate is 2.4Gbps.The design of the system is correct,which provides a reliable guarantee for the simulation flight test.

关 键 词：eMMC阵列 GTX 高速大容量 存储 FPGA RS422接口 

分 类 号：TN702[电子电信—电路与系统]