基于USB3.0的LVDS高速图像记录系统的设计  

Design of LVDS Image Data Cache System Based on USB3.0

作　　者：孟令军[1] 周之丽 文波[1] 李加超 赵盼盼[1] 

机构地区：[1]中北大学电子测试技术国家重点实验室仪器科学与动态测试教育部重点实验室,太原030051

出　　处：《电子器件》2015年第4期812-816,共5页Chinese Journal of Electron Devices

基　　金：国家自然科学基金重点项目(61004127)

摘　　要：针对USB2.0在图像数据传输中的局限性,提出了基于USB3.0实现LVDS高速图像数据存储系统的设计方法。设计以FPGA为逻辑控制中心,采用双片DDR2 SDRAM对高速图像进行缓存、同时采用交叉双平面编程方式存储图像,最后通过USB3.0接口实现了系统与PC机之间的高速数据通信。实验结果表明,系统能够对LVDS图像以30 Mbyte/s进行高速的存储,存储速率较常规编程方式提高了一倍;USB3.0接口能快速地将FLASH中的数据上传到PC机中;同时具有输入/输出接口简单、体积小、稳定可靠等优点。Due to the limitation of USB2. 0 in image data transmission,a design was proposed to achieve storage system of LVDS high speed image data based on USB3. 0. The core of the design was FPGA logic control,the design actualizes data stream cache through double DDR2 SDRAM,and image data memory according to the Interleave Two plane Page Program of FLASH. Finally,the high speed data communication between the LVDS image memory system and PC machine realizes through the USB3. 0 interface. The results show,the system can realize high speed memory of LVDS image data by 30 Mbyte / s,the rate of memory is increased by double compared with routine program method; upload the image data of the FLASH memorizer to PC machine,and has the advantage of,with the simple interfaces of input and output,a small size,good stability and reliability.

关 键 词：现场可编程逻辑门阵列 通用串行总线接口3.0 低压差分传输 交叉双平面存储 DDR2缓存 

分 类 号：TP27[自动化与计算机技术—检测技术与自动化装置]