【摘要】 针对USB2.0高速数据传输在实际应用中存在的具体问题,深入分析了诸如协议开销、带宽分配、工作环境、主机硬件结构和操作系统配置、设备驱动程序等影响速度提高的种种因素,同时重点阐述了USB2.0设备接口中端点FIFO通道和GPIF通用可编程接口的关键作用,并利用USB2.0控制芯片EZ-USBFX2进行了不同模式下数据传输的实验,最后在此基础上指出解决高速数据传输问题的几条对策。更多还原

【Abstract】 Based on the problems in the application of the high speed data transmission with USB2.0,the paper analyzed the reasons which affect the speed such as protocol overhead,bandwidth distribution,the host pc’s software and hardware,device driver program and so on.The paper also introduces the endpoint FIFO pipe and GPIF.Furthermore,some experiments for data transmission in different mode have been done with USB2.0 device using EZ-USB FX2.Then some strategies are brought forward which can solve the high speed data transmission in the summary.更多还原