As a network bridge, communication controller is the interface device which realize the function of communication between supervise PC and field bus.
总线控制器作为管理计算机与现场总线的接口装置，起到了管理计算机与智能仪表数据双向传输的网桥作用。
From bottom to top, the system is plotted out bus driver layer, device function driver layer, communication layer and user-interface. Each layer provides service to the layer above by interface style.
由下往上将整个驱动软件系统分为总线驱动层、设备功能驱动层、通信层和用户界面等层次，每一层都以接口的形式为上层提供服务。
To analyse the configuration process between OS protocol driver and USB bus device and the matching process between driver and the correspond device function interface.
分析出系统协议栈与USB总线设备的配置交互过程以及设备驱动程序与设备对应接口的匹配过程。
We present the architecture of PCI bus, the function of each PCI device, the design flow and implementation of PCI device driver on the SCA embedded platform.
介绍了该平台的PCI总线结构、各pci设备的功能及其驱动程序的设计流程和实现过程。
USB Function device driver is designed by client, it lies the up layer of USB Bus device driver, it sends and receives information from USB device by send URB to USB Bus device driver.
USB功能驱动程序由设备开发者编写，位于USB总线驱动程序的上层，通过向USB总线驱动程序发送USB请求包，来实现对USB设备信息的发送或接收。
USB Function device driver is designed by client, it lies the up layer of USB Bus device driver, it sends and receives information from USB device by send URB to USB Bus device driver.
USB功能驱动程序由设备开发者编写，位于USB总线驱动程序的上层，通过向USB总线驱动程序发送USB请求包，来实现对USB设备信息的发送或接收。
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