嵌入式VxWorks下基于PCI总线的USB接口主机端设计  

Design of USB host device in embedded VxWorks based on PCI bus

作　　者：刘智武[1] 王建宇[1] 张立辉[1] 

机构地区：[1]中航工业西安航空计算技术研究所,陕西西安710119

出　　处：《电子技术应用》2014年第2期5-7,11,共4页Application of Electronic Technique

摘　　要：分析了USB主机端的层次结构,采用PowerPC8270处理器设计了一种基于PCI总线的USB主机端设备,简化了主处理器与USB控制器的交互。在VxWorks操作系统下进行了USB主机端驱动的设计和实现,并通过试验对USB主机端的功能和读写速率性能参数进行了测试验证。测试表明,能够稳定地支持对USB接口存储外设的读写访问。This paper analyses the USB host stack structure. A PCI bus-based USB host device is designed using Power- PC8270 CPU. The design simplifies interaction between host CPU and USB controller, implements the USB host driver in embedded VxWorks operating system. Finally, the USB host function and the speed of read/write are tested on USB storage device. The re- suits slow that this design can support reading and writing USB storage peripheral device steadily.

关 键 词：USB主机 PCI总线 VXWORKS 

分 类 号：TP302.1[自动化与计算机技术—计算机系统结构]