一纸USB

USB的LPM spec,详细描述了LPM状态机和ACK-LPM spec for usb

文章讨论了利用超声以及一种物理模型来研究松质骨的健康状况。-A physical model for broadband ultrasonic studies of cancellous bone

一些USB驱动的英文资料，我没看懂，哈哈，希望提供给有用之人-Some USB-driven information in English, I did not understand, want to provide a useful person to the

控件注册问题 USBCLeaner自带控件与系统本身的控件版本不一致时会出现类似组件无法注册等提示,遇到这种情况,可以将prjXTab.ocx,COMCTL32.OCX复制到系统文件夹,XP一般是C:WindowsSystem32,NT一般是C:WiNNtSystem32下,然后 运行--Regsvr32 prjXTab.ocx Regsvr32 COMCTL32.OCX 一般就可以解决问题. -Control the registration of USBCLeaner own control and the control system itself will be different versions of similar components can not be registered, such as tips, encountered such a situation, can prjXTab.ocx, COMCTL32.OCX folder copied to the system, XP is usually C : Windows System32, NT is usually C: WiNNt System32 next, and then run- Regsvr32 prjXTab.ocx Regsvr32 COMCTL32.OCX general can solve the problem.

usb2.0芯片68013的设备驱动程序,可以很可以实现对68013的各种操作，并且很容易修改以满足自己的需求。-68013 chip USB 2.0 device driver, can be achieved for the various operational 68,013, and easily modified to meet their demands.

一个用vb开发的源代码-vb development with a source code

USB2.0　HOST　芯片驱动源代码，内附UBI9021芯片相关资料。-USB2.0 Host chipset driver source code, including ubi9021 chipset related matiarials.

USB设备端固件程序,枚举部分是全部程序的基础和重心,只有主机对设备枚举成功后,主机才能和设备进行正常的通信 USB的枚举过程分为4个状态. 1.接入态 v主机检测到USB设备插上,击活端口,并发送复位命令(保持10ms) 2.默认态 v主机使用默认地址读取设备描述符 (GET_DESCRIPTOR) v主机分配给设备一个总在线的唯一地址 (SET_ADDRESS) 3.地址态 v主机从新的地址获取设备描述符(GET_DESCRIPTOR) v主机获取所有设备的配置描述符(GET_DESCRIPTOR) 4.配置态 v主机设置描述符(设备,配置) (SET_CONFIGURATION) v主机读取配置状态(可选) (GET_CONFIGURATION) v主机读取接口状态(可选) (GET_INTERFACE) -USB device-side firmware, enumerate all part of the foundation and focus of the procedure, only the host of equipment after the successful enumeration, the host and equipment in order to engage in normal communication USB enumeration process is divided into four status. 1. Access state v host detected USB devices plug in, hit live ports, and send the reset command (to maintain 10ms) 2. default state v Use the default address of the host to read device descriptor (GET_DESCRIPTOR) v host assigned to the equipment of a total online only Address (SET_ADDRESS) 3. A

数据采集卡，采用同步传输模式。包括主机程序，固件源程序，驱动程序。出自《USB2.0原理与工程开发》我现在需要USB键盘方面的源程序，如果你有请提供crzman@163.com-data acquisition cards, using asynchronous transfer mode. Including mainframe procedures, firmware source, the driver. From "USB2.0 Principle and the development of the project," I now need a USB keyboard aspects of the source, If you please provide crzman@163.com

51单片机控制D12 USB器件的完整源代码, keil工程文件,可以在周立功开发板上运行-51 MCU control D12 USB device complete source code, c51 engineering documents, in the weeks running meritorious development board