基于PCI总线的1553B总线接口电路的设计与实现

本文介绍了PCI总线和MIL-STD-1553B总线转换的实现方法。该设计使用PLX公司的PCI9052和DDC公司的1553B协议芯片BU-61580,通过ALTERA公司的FPGA芯片EP1K100进行PCI协议和1553B协议的转换。使用Visual C 完成对PCI的读写操作,进而控制61580芯片实现1553B总线的数据传输。最后成功实现了用计算机通过PCI卡完成1553B总线控制器(BC端)的功能,并通过了系统测试。     

用CPLD实现DSP与PLX9054之间的连接

介绍了利用CPLD实现DSP芯片TMS320C6711b和PCI桥芯片PLX9054之间高速数据传输的系统设计方法，并给出了相应的系统设计原理图，同时对该系统的性能进行了分析。     

用CPLD实现DSP与PLX9054之间的连接

本文介绍了利用CPLD实现DSP芯片TMS320C6711B和PCI桥芯片PLX9054之间的高速数据传输，并给出了相应的系统设计原理图和性能分析。     

基于PCI的多通道ARINC429总线接口卡设计

航空总线通讯设备的检测是航空电子系统测试和维护的重要组成部分.现有的ARINC429总线通讯设备通道数较少,无法满足现实使用中多设备多通道同时检测的需求.为有效解决这一问题,通过对ARINCA29数据总线及相关型号芯片进行充分分析.提出了一种基于自主设计的多通道总线协议IP核的多通道ARINC429总线接口卡的硬件组成原理及实现方法.接口卡采用PLX公司的专用接口控制芯片PCI9054实现PCI接口,使用双端口RAM解决多通道同时工作时数据读写的实时性、可靠性问题.系统仿真分析和实装试验的结果表明,该总线接口卡能够很好地满足快速数据处理和稳定高效的数据传输的要求.在实际使用中.实现了16收16发的功能,具有很高的实际应用价值.     

基于PCI总线的图像处理及传输系统的设计

PLX公司的PCI 9054是一种通用的PCI总线接口芯片,可方便地进行软硬件开发实现PCI总线桥接。介绍了利用PCI 9054开发的图像处理及传输系统和配套的WDM驱动程序,以FPGA为系统硬件框架核心,从接口LVDS和RS 422读入图像数据及其他同步帧数据,经过处理后通过PCI接口芯片及PCI驱动程序进行与计算机系统的数据交换,从而实现基于PCI总线的高速图像传输处理。利用PCI 9054开发PCI高速数据传输系统具有较好的性价比。     

基于PCI的视频信号发生器的实现方法

提出了一种基于PCI总线的视频图像数据发送系统的设计和实现方法.主要介绍系统的硬件实现方法和软件的实现流程.该系统利用PLX9054作为PCI的接口芯片,用FPGA实现9054PCI 接口芯片与发送系统总线之间的控制,D/A转换芯片完成同步信号和视频图像数据的组合,并转换成模拟视频信号,作为发送系统的输出.该系统为图像跟踪与识别系统提供一个定量的性能测试设备.     

PEX8311芯片数据传输研究

介绍了美国PLX公司的芯片PEX8311,该芯片是一块PCI Express总线到局部总线的桥接芯片,基于PCI Express总线的优越性能,相对于PCI总线的桥接芯片而言,该芯片具有更高的传输性能。介绍了该芯片3种数据传输方式,主模式、从模式和DMA(直接存储器存取)方式,着重介绍了该芯片DMA数据传输方式下块模式和分散集中模式,以及不同模式下的初始化设置,并对DMA方式下块模式的传输性能进行了测试。     

PCI9052在ISA与PCI总线接口中的应用

PCI90 52是PLX公司推出的PCI总线接口芯片 ,能够实现ISA总线与PCI总线的无缝连接 ,可方便地将原有的ISA插卡移植到PCI总线。文中主要介绍了该芯片的ISA接口模式 ,并给出了一个实际应用PCI90 52的系统。     

基于PCI及DDR的光纤接口CCD图像采集卡设计

综合PCI、DDR、FPGA、光纤等技术,设计了一款远程高速CCD图像采集卡.采集卡用光纤传输信号,并使用DDR SDRAM作为数据缓存,采用 EP2C35F484C8芯片实现采集卡的逻辑控制以及DDR的控制器,采用PCI9054桥接芯片实现PCI接口.以Numega公司的DriverWorks作为开发工具开发了基于Windows下的WDM模型的系统驱动程序,用VC6.0开发了基于Windows平台的可视化应用程序.     

基于PCI9052的扩展板设计

本文对PCI总线接口技术及PLX技术公司开发的PCI协议接口芯片PCI9052进行了介绍。讨论了该接口芯片的功能、特点及应用中应注意的问题。     

Development of the readout system for waveguide multilayer optical card

Waveguide multilayer optical card （WMOC） is a novel storage device of three-dimensional optical information. An advanced readout system fitting for the WMOC is introduced in this paper. The hardware mainly consists of the light source for reading, WMOC, motorized stages addressing unit, microscope imaging unit, CCD detecting unit and PC controlling ＆ processing unit. The movement of the precision motorized stage is controlled by the computer through Visual Basic （VB） language in software. A control panel is also designed to get the layer address and the page address through which the position of the motorized stages can be changed. The WMOC readout system is easy to manage and the readout result is directly displayed on computer monitor.     

Nanoimprint Lithography -A Next Generation High Volume Lithography Technique

IntroductionNanoimprint Lithography is a well-acknowl-edged low cost, high resolution, large area pattern-ing process. It includes the most promising methods,high-pressure hot embossing lithography (HEL) [2],UV-cured imprinting (UV-NIL) [3] and micro contactprinting (m-CP, MCP) [4]. Curing of the imprintedstructures is either done by subsequent UV-lightexposure in the case of UV-NIL or by cooling downbelow the glass transition temperature of the ther-moplastic material in case of HEL…     

Collinear phase-matching study of terahertz-wave generation via difference frequency mixed in GaAs and Inp

The collinearly phase-matching condition of terahertz-wave generation via difference frequency mixed in GaAs and InP is theoretically studied. In collinear phase-matching, the optimum phase-matching wave hands of these two crystals are calculated. The optimum phase-matching wave bands in GaAs and lnP are 0.95-1.38μm and 0.7-0.96μm respectively. The influence of the wavelength choice of the pump wave on the coherent length in THz-wave tuning is also discussed. The influence of the temperature alteration on the phase-matching and the temperature tuning properties in GaAs crystal are calculated and analyzed. It can serve for the following experiments as a theoretical evidence and a reference as well.     

Effects of the alloy compositions on the phonon-polaritons in ternary mixed crystals

Composition dependence of bulk and surface phonon-polaritons in ternary mixed crystals are studied in the framework of the modified random-element-isodisplacement model and the Bom-Huang approximation. The numerical results for Several Ⅱ - Ⅵ and Ⅲ- Ⅴ compound systems are performed, and the polariton frequencies as functions of the compositions for ternary mixed crystals AlxGa1-xAs, GaPxAS1-x, ZnSxSe1-x, GaAsxSb1-x, GaxIn1-xP, and ZnxCd1-xS as examples are given and discussed. The results show that the dependence of the energies of two branches of bulk phonon-polaritons which have phonon-like characteristics, and surface phonon-polaritons on the compositions of ternary mixed crystals are nonlinear and different from those of the corresponding binary systems.     

Influence of PVK ： NPB hole transporting layer on the characteristics of organic light-emitting devices

A doping system consisting of NPB and PVK is employed as a composite hole transporting layer （CHTL）. By adjusting the component ratio of the doping system, a series of devices with different concentration proportion of PVK ： NPB are constracted. The result shows that doping concentration of NPB enhances the competence of hole transporting ability, and modifies the recombination region of charge as well as affects the surface morphology of doped film. Optimum device with a maximum brightness of 7852 cd/m^2 and a power efficiency of 1.75 lm/W has been obtained by choosing a concentration proportion of PVK ： NPB at 1：3.     

New insert layer structure OLEDs

An insert layer structure organic electroluminescent device（OLED） based on a new luminescent material （Zn（salen）） is fabricated. The configuration of the device is ITO/CuPc/NPD/Zn（salen）/Liq/LiF/A1/CuPc/NPD/Zn（salen）/Liq/LiF/A1. Effective insert electrode layers comprising LiF（1nm）/Al（5 nm） are used as a single semitransparent mirror, and bilayer cathode LiF（1 nm）/A1（100 nm） is used as a reflecting mirror. The two mirrors form a Fabry-Perot microcavity and two emissive units. The maximum brightness and luminous efficiency reach 674 cd/m^2 and 2.652 cd/A, respectively, which are 2.1 and 3.7 times higher than the conventional device, respectively. The superior brightness and luminous efficiency over conventional single-unit devices are attributed to microcavity effect.     

Analysis of error performance on Turbo coded FDPIM

Due to variable symbol length of digital pulse interval modulation（DPIM）, it is difficult to analyze the error performances of Turbo coded DPIM. To solve this problem, a fixed-length digital pulse interval modulation（FDPIM） method is provided. The FDPIM modulation structure is introduced. The packet error rates of uncoded FDPIM are analyzed and compared with that of DPIM. Bit error rates of Turbo coded FDPIM are simulated based on three kinds of analytical models under weak turbulence channel. The results show that packet error rate of uncoded FDPIM is inferior to that of uncoded DPIM. However, FDPIM is easy to be implemented and easy to be combined, with Turbo code for soft-decision because of its fixed length. Besides, the introduction of Turbo code in this modulation can decrease the average power about 10 dBm, which means that it can improve the error performance of the system effectively.     

A method for calculating the center position of collimated light

It is a key problem to accurately calculate beam spots＇ center of measuring the warp by using a collimated laser. A new method, named double geometrical center method （DGCM）, is put forward for the first time. In this method, a plane wave perpendicularly irradiates an aperture stop, and a charge couple device （CCD） is employed to receive the diffraction-beam spots, then the geometrical centers of the fast and the second diffraction-beam spots are calculated respectively, and their mean value is regarded as the center of datum beam. In face of such adverse instances as laser intension distributing defectively, part of the image being saturated, this method can still work well. What＇s more, this method can detect whether an unacceptable error exits in the courses of image receiving, processing and calculating. The experimental results indicate the precision of this method is high.     

Preparation and Characterization of TaN ALD Precursors

High purity organic-tantalum precursors for thin film ALD TaN were synthesized and characterized.Vapor pressure and thermal stability of these precursors were studied.From the vapor pressure analysis,it was found that TBTEMT has a higher vapor pressure than any other published liquid TaN precursor,including TBTDET,TAITMATA,and IPTDET.Thermal stability of the alkyl groups on the precursors was investigated using a 1H NMR technique.The results indicated that the tertbutylimino group is the most stable group on TBTDET and TBTEMT as compared to the dialkylamido groups.Thermal stability of TaN precursors decreased in the following order:TBTDET ＞ PDMAT ＞ TBTEMT.In conclusion,precursor vapor pressure and thermal stability were tuned by making slight variations in the ligand sphere around the metal center.     

Curved crystal spectrometer for the measurement of X-ray lines from laser-produced plasmas

In order to diagnose the laser-produced plasmas, a focusing curved crystal spectrometer has been developed for measuring the X-ray lines radiated from a laser-produced plasmas. The design is based on the fact that the ray emitted from a source located at one focus of an ellipse will converge on the other focus by the reflection of the elliptical surface. The focal length and the eccentricity of the ellipse are 1350 mm and 0.9586, respectively. The spectrometer can be used to measure the X- ray lines in the wavelength range of 0.2-0.37 nm, and a LiF crystal （200） （2d = 0.4027 nm） is used as dispersive element covering Bragg angle from 30° to 67.5°. The spectrometer was tested on Shengnang- Ⅱ which can deliver laser energy of 60-80 J/pulse and the laser wavelength is 0.35 μm. Photographs of spectra including the 1 s2p ^1P1-1s^2 ^1S0 resonance line（w）, the 1s2p ^3P2-1s^2 1S0 magnetic quadrupole line（x）, the 1s2p ^3P1-1 s^2 ^1S0 intercombination lines（y）, the 1 s2p ^3S~1-1 s^2 ^1S0 forbidden line（z） in helium-like Ti Ⅹ Ⅺ and the 1 s2s2p ^2P3/2-1 s622s ^2S1/2 line（q） in lithium-like Ti Ⅹ Ⅹhave been recorded with a X-ray CCD camera. The experimental result shows that the wavelength resolution（λ/△ 2） is above 1000 and the elliptical crystal spectrometer is suitable for X-ray spectroscopy.