共查询到18条相似文献,搜索用时 109 毫秒
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XScale架构分析及优化策略 总被引:1,自引:0,他引:1
XScale被广泛地应用于嵌入式系统,但是很多程序并没有充分利用XScale架构的各种优点,性能并不尽如人意。本文详细分析了IntelXScale架构,并提出如何基于XScale架构进行优化的策略,最后对实际应用程序进行优化,并给出测试结果。 相似文献
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XSca1e是一款具有高性能、低功耗特性的ARM兼容嵌入式微处理器架构。XScale引入了多种硬件特性提高其处理能力,但也给应用程序的优化带来了困难。本分析XScale体系结构的特点,从开发工具选择、系统设计和编程开发等多个角度讨论对XScale应用程序进行优化的策略和技术。 相似文献
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8月24日,英特尔在京宣布了它针对无线和互联网基础设施领域设计的新型芯片微处理器构架。构筑在英特尔 StrongARM技术之上的XScale微处理器架构的核心采用0.18微米的工艺技术制造。XScale的一个非常显著的特点是利用了英特尔动态电压管理技术和媒体处理技术增强了低功耗特性,适应范围从万分之一瓦特到1.6瓦特,时钟工作频率接近1GHz。 相似文献
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基于PXA270的嵌入式系统设计 总被引:2,自引:0,他引:2
PXA270是Intel公司生产的一款基于XScale架构的高集成度高性能的优秀嵌入式处理器.本文讨论了以PXA270为平台的嵌入式系统开发的有关硬件设计以及ARM嵌入式系统的软件实现.设计了基于PXA270的嵌入式系统. 相似文献
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在嵌入式系统中,Bootloader是软件开发的第一个环节,在完成引导加载系统镜像的同时,扩展和增加了具体硬件模块上的功能支持,对于一个嵌入式设备后续的软件开发至关重要.Blob是一款功能强大的Bootloader, Intel PXA270是一款基于XScale架构的嵌入式处理器.本文分析了Blob的启动机制和工作原理以及在Intel PXA270平台上的移植过程. 相似文献
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XScale PXA255是Intel推出的一款基于ARM核的高性能微处理器,其核心工作频率最高可达400MHz,目前各大Pocket PC厂商已推出了基于PXA255的产品。该文分析了现有ARM Linux内核的实时处理缺陷,并提出了一种基于此处理器的Linux实时系统实现方法。 相似文献
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文章从软件低功耗优化角度,结合IXP2400网络处理器中XScalecore处理器体系结构的低功耗技术特点,在SimWattch模拟平台上,就频率动态调整和程序设计语言不同结构成分对应用程序运行功耗的影响进行了模拟和分析,通过对一组Banchmark程序的模拟,结果表明在编译系统、操作系统或应用程序设计中采用这些低功耗优化技术设计可降低至少23%以上的运行功耗。 相似文献
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Demand for mobile video applications is growing today in wireless handheld platforms. Optimizing instruction set architectures
and employing SIMD techniques is a logical approach towards attaining higher performance in mobile multimedia applications.
Intel? Wireless MMX™ technology has been designed to accelerate mobile multimedia and applications processing in a power efficient
manner. This paper provides an overview of Intel? Wireless MMX™ technology, a 64-bit Single Instruction Multiple Data (SIMD)
coprocessor for the Intel? XScale? microarchitecture, and the key features of the architecture that specifically enhance the
multi-media performance. Tools and techniques for optimization are also described.
Nigel C. Paver has 13 years experience with the ARM architecture, and in the Intel PCA Components group in Austin, Texas, he is responsible
for the architecture and implementation of multimedia coprocessors for the Intel XScale micro-architecture. He is also involved
in product architecture and definition of Intel PCA processors. Before Intel, Nigel was one of the lead designers of the early
AMULET asynchronous ARM microprocessors at the University of Manchester. He was also vice president in a startup company which
used asynchronous design techniques to produce a low-power asynchronous DSP core. Nigel holds a Master of Science degree and
Ph.D. in computer science from the University of Manchester and a Bachelor of Science degree in electronics from UMIST.
Moinul Khan is a multimedia product architect at Intel Corporation PCA Components group. He is responsible PCA graphics and security
architecture. His research interests are virtual prototyping, signal processing algorithms and architecture and communications
networking. Before joining Intel he was a technology specialist and founding member of a startup at ATDC, Georgia. He worked
on his doctoral research at Georgia Center for Advanced Telecommunications Technology at Georgia Institute of Technology.
He received his B.Tech form Indian Institute of Technology and MSEE from Georgia Tech. He also worked as a research member
for Canadian Institute for Telecommunications Research and Bell Communications Laboratories.
Bradley C. Aldrich joined Intel in 1997 where he is currently an architect within the PCA Components Group. His current work includes the development
of coprocessor instruction support in addition to image capture and display technologies for XScale based application processors.
He was previously a member of the Intel/Analog Devices joint development architecture team responsible for video enhancements
for the Micro Signal Architecture. Prior to that he was a video system architect in Intel's Digital Imaging and Video Division
working on CMOS sensors, still cameras, and tethered PC based video peripherals. He has also worked as a device engineer for
Motorola and as a test engineer for Tektronix. He received a BSEE in 1988 and MSEE in 1994 from the University of Texas at
San Antonio. 相似文献
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随着无线传感器网络的发展,它在油气勘探,环境监测等领域得到了广泛的运用.在主控端采用基于XScale架构的微处理器PXA255,以其低功耗、高性价比的优点,现在在智能设备的运用领域随处可见.通过分析无线传感器网络的组成原理,对传感器节点的基本组成、无线传感器网络传输控制协议、通过PXA255处理器控制触摸屏和存储卡的功能实现进行了论述. 相似文献
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采用IntelXScale架构的ARM处理器,以UP-TECHPXA270-S为硬件开发平台,Windows CE 5.0嵌入式操作系统和qt-embedded-wince-opensource 4.5为应用程序界面框架,完成智能GPS终端导航系统的设计与实现。首先在硬件平台上移植嵌入式操作系统,包括集成硬件的各种底层驱动以及外围设备的驱动程序;然后在系统上移植具有友好GUI界面的QT4.5应用程序框架;最后对MapInfo地图制作软件导出的mif和mid图层格式文件进行读取,在QT的视图框架上进行导航地图的绘制,并在系统上实现无线通讯、指纹识别、联合报警等功能。 相似文献
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