| 1. | Thus , it becomes a low cost - effective way to use the existing vmebus controller chip
本文旨在研究一种用fpga实现vme总线控制器芯片功能的方法。 |
| 2. | By now this kind of decoder has been used in 1553b bus controllor ls - ft33 and be operating reliabilitily
该译码器已经应用于1553b总线控制器ls - ft33中，至今运行可靠。 |
| 3. | 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。 |
| 4. | The feature of fieldbus control system is described in this paper . the method of design on fieldbus controller based on 80c552 microcontroller is presented
摘要描述了现场总线控制系统的结构特点，提出了一种基于80c552单片机的现场总线控制器的设计方法。 |
| 5. | The whole system regards supervise pc as the center , which joins the field bus by communication controller . every of the intelligent instruments directly connected with field bus as a node
整个系统以管理计算机为核心，管理计算机通过总线控制器连接到总线，各智能仪表直接连接在现场总线上，作为现场总线的一个节点。 |
| 6. | At first , this dissertation researches the design and implementation of pci bus controller , based on fpga technology and using the high - level design method . the pci local bus specification is also analysed comprehensively
本课题包括了基于fpga技术的pci总线控制器、 pci总线控制卡硬件电路、 wdm驱动程序和应用软件的设计与实现。 |
| 7. | The data from the supervise pc is transmitted to the intelligent instruments through field bus . the measurement data from the intelligent instruments can be transmitted to the supervise pc also through field bus
管理计算机的控制参数等变量数据通过总线控制器下载到智能仪表中，智能仪表中的数据可通过现场总线上传到管理计算机。 |
| 8. | In addition , it also embodies the high date - transmission speed of usb software design consists of writing the firmware program of usb controller and developing drive program based on windows operating system
3 .编写了usb总线控制器的固件程序和基于windows操作系统平台的驱动程序。固化在控制器中的固件代码能在上电后自动完成usb设备的配置与初始化,并提供总线工作的数据传输中断服务。 |
| 9. | In the design of the hardwares , usb control chip pdiusbd12 and can control chip sja1000 from philips are used , p89c51 microchip from philips is the control chip , and the circuit of photoelectric isolation enhances the ability of anti - jamming
在硬件设计上，采用philips公司的pdiusbd12usb总线控制器以及sja1000can总线控制器进行数据通讯，并使用philips的p89c51单片机进行控制， can总线收发上利用光电隔离电路提高抗干扰性。 |
