共查询到19条相似文献，搜索用时 132 毫秒
1.
本文研讨了TITMS320C54X的HPI外设的结构和工作原理,阐述了它在与外部主机进行数据通讯应用时的使用要点。以TMS320C5402DSP为例,给出了一种C54X DSP与51单片机通信的具体实现方案以理解HPI所具有的一系列优点。本文为类似系统的设计提供了一定参考,具有较强的工程性和实用意义。 相似文献
2.
通过分析TMS320vc5402的结构特点以及DSP系统设计的原则,介绍了以89C52单片机作外部存储器的最小应用系统及其构成,并详细阐述了如何利用单片机作为DSP的主机实现快速HPI接口的数据交换和DSP系统程序的主机接口引导的设计过程。 相似文献
3.
HPI主机接口的应用设计 总被引：1，自引：0，他引：1
HPI是德州仪器公司新一代,高性能DSP上配置的与主机进行通信的片内外设。介绍了TMS320C5402的HPI口在DSPs中的应用,并给出了具体的硬件连接和部分程序代码。该方案以简单的电路设计实现了5-DSPs系统稳定高速的数据传输。 相似文献
4.
介绍了在TI公司TMS320VC5409 DSP应用系统中TMS320VC5409与SST29LE010型FLASH存储器的硬件连接,给出了DSP对外部FLASH存储器的读、写操作过程,特别是通过仿真器和CCS开发软件对DSP外部FLASH存储器实现程序设计和仿真的方法,说明了DSP系统加电后的用户程序自举引导(bootload)过程。 相似文献
5.
自举电路在电路设计中的应用 总被引：1，自引：0，他引：1
朱丽华 《福建信息技术教育》2006,(2)
在电路的设计中,常利用自举电容构成的自举电路来改善电路的某些性能指标,如利用自举提高射随器的输入阻抗、利用自举提高电路增益及扩大电路的动态范围等。在此就自举电路的工作原理及典型应用作一介绍。 相似文献
6.
HPI的概念与发展
《企业大学》：无论是HPT（Human Performance Technology）还是HPI（Human Performance Improvement）已经越来越多地得到广泛的研究和使用,HPI的概念是什么？它是如何兴起的？ 相似文献
7.
何寿康 《湖南城市学院学报》1992,(6)
本文通过对自举式射极输出器的定量分析,阐明了自举电阻比管子的输入电阻越大、自自举电容比等效偏置电阻越大,其总的输入阻抗越大。本文亦为电路设计提供了依据和曲线图。 相似文献
8.
9.
在学校计算机实验室,由于上机人员比较复杂,以及在实验中操作不当,常常造成ＤＯＳ不能自举,使计算机无法工作,从而影响了教学。造成ＤＯＳ不能自举的因素很多,但综合起来,不能自举的故障可分为两大类,软故障和硬故障。软故障一般由计算机病毒、ＤＯＳ版本不符,Ｄ... 相似文献
10.
朱永金 《四川职业技术学院学报》1997,(3)
本文用实验的方法验证了自举电路的作用。自举电路不仅增大了功放级的动态范围,而且增大了功放推动级的负载电阻,从而增大了推动级的电压放大倍数,同时又增大了推动级的动态范围。 相似文献
11.
吴绍根 《广东轻工职业技术学院学报》2007,6(3):1-4
给出了一种简单易用的设计开发Bootloader的方法.首先介绍了嵌入式系统的Bootloader的最基本、最核心的任务和运行流程,在此基础上,详细介绍了设计开发精巧的Bootloader的核心思想和关键技术,并针对LPC2210给出了一例实现. 相似文献
12.
This paper focused on the removal and transformation of the dissolved organic matter （DOM） in secondary effluent during the granular activated carbon （GAC） treatment. Using XAD-8/XAD-4 resins, DOM was fractionated into five classes： hydrophobic acid （HPO-A）, hydrophobic neutral （HPO-N）, transphilic acid （TPI-A）, transphilic neutral （TPI-N） and hydrophilic fraction （HPI）. Subsequently, the water quality parameters of dissolved organic carbon （DOC）, absorbance of ultraviolet light at 254 nm （UV-254）, specific ultraviolet light absorbance （SUVA） and trihalomethane formation potential （THMFP） were analyzed for the unfractionated and fractionated water samples. The results showed that the order of the DOC removal with respect to DOM fractions was observed to be HPI〉HPO-A〉HPO-N〉TPI-A〉TPI-N. During the GAC treatment, the THMFP of the unfractionated water samples decreased from 397.4 μg/L to 176.5 μg/L, resulting in a removal efficiency of 55.6%. The removal order of the trilaalomethanes （THMs） precursor was as follows： HPO-A〉TPI-A〉TPI-N〉HPO-N〉HPI. By the GAC treatment, the specific THMFP of HPO-A, TPI-A, TPI-N and the original unfractionated water samples had a noticeable decrease, while that of HPO-N and HPI showed a converse trend. The Fourier transform infrared （FTIR） results showed that the hydroxide groups, carboxylic acids, aliphatic C-H were significantly reduced by GAC treatment. 相似文献
13.
冀云 《重庆职业技术学院学报》2010,19(5):144-146
介绍了一种通过自己编写的烧写FLASH的程序以及二次引导程序实现DSP上电自启动的方法。当DSP复位时内部引导装载程序会装载位于FLASH的前1KB的二次引导程序。装载成功后DSP从0x00地址开始执行二次引导程序;二次引导程序的作用就是完成加载用户应用程序,并且加载完成后跳到C程序入口点c_int00处,执行用户程序,实现用户程序的FLASH自启动。 相似文献
14.
Bootloader开发是嵌入式系统必不可少而且十分重要的部分。介绍了Bootloader的概念、主要任务、启动流程等,然后探讨了基于友善之臂(FriendlyARM)SBC2410V6的Bootloader(U-Boot)的设计和实现,其实现方法和步骤具有一定的通用性。 相似文献
15.
德国HPI电子/微电子技术培训系统具有面向职业实践的特色,有效地帮助了成千上万的劳动者获得了从事电子/微电子工作的技能.本文详细介绍了HPI的特点、结构和内容、教材和教具以及考试.同时还探讨了在我国建立类似体系的可能性. 相似文献
16.
Marbach-Ad G Briken V Frauwirth K Gao LY Hutcheson SW Joseph SW Mosser D Parent B Shields P Song W Stein DC Swanson K Thompson KV Yuan R Smith AC 《CBE life sciences education》2007,6(2):155-162
As research faculty with expertise in the area of host–pathogen interactions (HPI), we used a research group model to effect our professional development as scientific educators. We have established a working hypothesis: The implementation of a curriculum that forms bridges between our seven HPI courses allows our students to achieve deep and meaningful learning of HPI concepts. Working collaboratively, we identified common learning goals, and we chose two microorganisms to serve as anchors for student learning. We instituted variations of published active-learning methods to engage students in research-oriented learning. In parallel, we are developing an assessment tool. The value of this work is in the development of a teaching model that successfully allowed faculty who already work collaboratively in the research area of HPI to apply a “research group approach” to further scientific teaching initiatives at a research university. We achieved results that could not be accomplished by even the most dedicated instructor working in isolation. 相似文献
17.
Silicon carbide nanotubes (SiCNTs) with special morphology synthesized by supercritical hydrothermal method at 470 °C and
8 MPa have been reported in this paper. SiCNTs with special morphology were characterized by transmission electron microscopy
(TEM) and high-resolution TEM (HRTEM). There are two kinds of silicon carbide with special morphology: One is oval SiCNTs
with small aspect ratio, the other is bamboo cone-shape structure. SiCNTs have been analyzed by fluorescence spectrometer.
The results indicate that the SiCNTs have strong photoluminescence (PL) property. The SiCNTs with oval shape are one kind
of intermediate state of growth process of nanotube. The growth mechanism of silicon nanotubes has been proposed based on
experiment data. The investigations of growth mechanism of SiCNTs with bamboo structure show that the defect produced in the
growth process play the important role in SiCNTs with special structure. 相似文献
18.
Li Ju Chen 《欧洲特需教育杂志》2019,34(1):1-19
This research identified the potential special education transition development trajectories by tracing the priorities and hierarchical structure of published transition issues in special education. Social network analysis (SNA) of the 1900–2015 data from the Web of Science (WOS) database achieves a transition exploration flow by citation-based main path analysis (MPA). The first main finding was that 517 papers were published relating to special education transition over the past 60 years. Special education transition literature emerged in 1957, was systematically explored after 1987, and grew rapidly in the 1990s. The second main finding was that the trajectories contained various topics that can be broken down into two mainstream fields: curriculum and employment. The third main finding was that there are five sub-branches of the mainstream fields: legislation; team working; accountability; individualised transition programmes (ITP); and self-determination. This research is the first to use MPA techniques in SNA for special education transition. The findings indicate that more foci deserve to be explored to attain the transition working exhaustively and smooth transitions between each career stage for individuals with disabilities. 相似文献
19.
Silicon carbide nanotubes (SiCNTs) with special morphology synthesized by supercritical hydrothermal method at 470 ℃ and 8 MPa have been reported in this paper.SiCNTs with special morphology were characterized by transmission electron microscopy (TEM) and high-resolution TEM (HRTEM).There are two kinds of silicon carbide with special morphology:One is oval SiCNTs with small aspect ratio,the other is bamboo cone-shape structure.SiCNTs have been analyzed by fluorescence spectrometer.The results indicate that the SiCNTs have strong photoluminescence (PL) property.The SiCNTs with oval shape are one kind of intermediate state of growth process of nanotube.The growth mechanism of silicon nanotubes has been proposed based on experiment data.The investigations of growth mechanism of SiCNTs with bamboo structure show that the defect produced in the growth process play the important role in SiCNTs with special structure. 相似文献