摘要
本文讲述了USB通信技术。首先叙述了采用USB总线的优点及其协议规范版本变动,再次描述了USB系统的结构、通信数据流模型;接下来详细讲述了USB的通信传输基础,两种通信方式,控制传输、中断传输、批量传输、同步传输四种传输类型以及USB设备的枚举过程。最后是关于USB设备端固件程序的设计思想,并以PDIUSBD12为例给出了固件程序设计流程图。
This paper introduced USB communication technology. Firstly, This paper described the virtue of the USB and protocol alteration about the USB; Secondly,described the structure of the USB system and communication module of the USB; Thirdly, introduced the transferring base of the USB communication, two communication modes, control transfers, interrupt transfers, bulk transfers, synchronous transfers and so on and described also enumeration process of USB; Lastly, this paper introduced the design of the firmware about USB device and show the flow chart of the software about the USB chip-PDIUSBD12 .
出处
《北京广播学院学报（自然科学版）》
2004年第4期55-64,92,共11页
Journal of Beijing Broadcasting Institute(Science and Technology)
