美国Echelon公司的USB网卡U20基于OpenLDV编程，本资料为其编程指南。
Echelon s US-based USB adapter U20 OpenLDV programming, Programming Guide for this information. (2015-04-15, PDF, 2198KB, 下载8次)
介绍USB的下载接口，程序编程及工作原理
USB download interface, programming, and working principle (2012-05-22, PDF, 197KB, 下载2次)
从USB2.0协议分析，USB编程需要的技术。
USB2.0 protocol analysis, the technology of USB programming needs (2012-04-26, PDF, 1262KB, 下载3次)
本书规范了USB的工业标准。该规范介绍了USB的总线特点、协议内容、事务种类、总线管理、接口编程的设计，以及建立系统、制造外围设备所需的标准。
The book industry standard specifications of the USB. The specification describes the characteristics of the USB bus, agreement, transaction types, bus management, interface programming, design, and building systems, manufacture of peripherals required standards. (2010-07-07, PDF, 5480KB, 下载7次)
USB芯片PDIUSBD12 固件程序开发介绍，编程过程
USB chip PDIUSBD12 firmware development, the programming process (2009-03-30, PDF, 82KB, 下载1次)
关于usb的一些编程文档，个人觉得比较不错
关于usb的一些编程文档，个人觉得比较不错 (2009-03-14, PDF, 42KB, 下载14次)
介绍基于DSP的USB接口硬件设计、软件编程及应用，详细论述了USB的固件编程及应注意的问题，并给出USB接13在Mass Storage中的应用．
Introduction of the USB interface based on the DSP hardware design, software programming and application in detail the USB firmware programming and should pay attention to the problem, and gives USB in Mass Storage Access 13 application. (2007-12-09, PDF, 233KB, 下载5次)
：C8051F320 是Cygnal 公司推出的一款新型USB 微控制器芯片。该器件具有较快的
处理速度和较大的存储容量，并且具有在系统可编程的功能，是USB 接口设计的理想选择。
: C8051F320 is Cygnal company introduced a new USB micro-controller chip. The device has a faster processing speed and larger storage capacity, and has in-system programmable functions, USB interface design is an ideal choice. (2007-11-16, PDF, 1605KB, 下载28次)
介绍了一种基于通用可编程接口的通用串行总线-高级技术配件解决方案，将普通硬盘转化为Usb Mass Storage.
introduces a general programmable interface based on the Universal Serial Bus-senior technical accessories solution that will drive into ordinary Usb Mass Storage. (2005-05-27, PDF, 84KB, 下载103次)