This code can detect the insertion of USB device in the system

把USB接口做成动态连接库-USB interface, Dynamic Link Library

softphone GUI

基本USB驱动程序-basic USB Driver

PHILIPS 的 D12 固件开发说明和例子-PHILIPS the D12 firmware development descriptions and examples

USBtest,USB测试程序,可以一看-USBtest, USB testing procedures, you can watch one

This directory contains the 8051 firmware frameworks source code for the Anchor Chips EZ-USB FX2 chip.-This directory contains the 8051 firmware frameworks source code for the Anchor Chips EZ-USB FX2 chip.

EP26_Bulk，大端点bulk传输。包含全部firmware以及详细的pdf文件说明。-EP26_Bulk, endpoint bulk transmission. Includes all firmware and the detailed pdf documentation.

How to write a USB HID driver

cypress公司的cy3684硬件电路，所用芯片为cy7c68013A-cypress

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.