usb驱动的源代码有需要的就下吧。

PDIUSBD12 常见问题解答-PDIUSBD12 FAQ

USB开发大全英文原版，包括各种传输模式的描述和otg-Encyclopedia of the English original USB development, including a description of a variety of transmission modes and OTG

vb下usb接口通信的实验。-vb under usb interface communications experiment.

High volume USB 2.0 devices will be designed using ASIC technology with embedded USB 2.0 support. For full-speed USB devices the operating frequency was low enough to allow data recovery to be handled in a vendors VHDL code, with the ASIC vendor providing only a simple level translator to meet the USB signaling requirements. Today s gate arrays operate comfortably between 30 and 60 MHz. With USB 2.0 signaling running at hundreds of MHz, the existing design methodology must change.

EZ-USB FX2的一个单字读和单字写的程序，利用GPIF轻松实现，值得一看-EZ-USB FX2 in a word read and write words of procedure, and use GPIF easily, an eye-catcher

USB过滤驱动框架。-USB filters the actuation frame.

some examples of LED display vir EZUSB

用VHDL语言编写的代码，以供大家学习和交流，方便大家学习！-prepared using VHDL code for all to study and exchange to facilitate learning!

ez_usb_drv驱动源码 vc工程 -ez_usb_drv driver source code vc project

USB设备驱动程序源码-USB device driver source code