三星S3C2440 USB监控程序DNW

usb视频的官方标准！-usb the official video standard!

USB转SPI的应用程序 FT2232C-USB-SPI applications FT2232C

一个很好的serial 串口演示代码，演示串口的读写功能-a good code for comm communication

usbview设备驱动程序开发-USBView- device driver development.

usbc测试软件,在各种操作系统都可以,比较好用,请适用 -usbc testing software, the various operating systems can be more convenient, please apply

演示CY7C68013如何接受OUT包的源程序-Source code to demo how CY7C68013 to receive OUT packege.

全面介绍USB_F320的实用文章USB_F320-USB introduced a comprehensive article

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

usb otg 技术规范-USB otg technical specifications

一个不错的usb加密卡的设计，用户端。用的cypress公司的芯片。-a good usb encryption card design, client. Cypress with the company"s chip.