摘要
通用串行总线(Universal Serial Bus，USB)作为一种应用在PC领域的新型接口技术，是一种简单的计算机外围接口标准，具有便捷易用、扩展方便等优点。1998年后，随着微软在Windows 98中内置了对USB接口的支持模块，目前已成为计算机必备的一个接口。他非常适合作为主机和各种外设之间的通信接口，从而实现主机和多台外部硬件设备之间简单、快速、可靠的连接和通信。传统的计算机外设接口存在许多缺点，已经不能适应计算机的需要，新近推出的通用串行总线USB，由于具有速度快、使用方便灵活、易于扩展、支持即插即用，成本低廉等一系列优点，从而得到了广泛的应用。本文主要以USB1.1 为基础讨论了USB的基本原理、工作流程、通信协议和相应的关键技术，并介绍了一种USB接口的10M以太网卡的设计方案。分析了USB总线的功能特点、并简要说明了USB接口的实际应用。
关键词：通用串行总线(USB)；接口；数据传输
Abstract
Universal Serial Bus (USB) is a new interface technology, its application in PC fields. It is a simple standard of computer periphery interface. It has many advantages, such as easily use and expansion, it also has became necessary interface of computer after1998. It is fit for communication host and peripherals in order to realize easily and high speed communication. Traditional interfaces of external peripherals have many shortcomings, so they are not consistent with requirements of the PC now. The newly-come Universal Serial Bus has many advantages, such as: high speed, ease-of-use, ease to expand port, supporting plug-play, low-cost etc, so it is used very widely now. This paper mainly based on USB1.1 USB discussed the basic principles, work flow, Communication Protocol and the corresponding key technologies, and introduced a USB 10M Ethernet card design. And it analyzes some main features of USB, also discusses practical application.
Keywords: Universal Serial Bus (USB); interface; data transfer
