<nav id="sgewe"></nav> The Xilinx Zynq-7000 Extensible Processing Platform (EPP) redefines the possibilities for embedded systems, giving system and software architects and developers a flexible platform to launch their new solutions and traditional ASIC and ASSP users an alternative that aligns with today’s programmable imperative. The new class of product elegantly combines an industrystandard ARMprocessor-based system with Xilinx 28nm programmable logic—in a single device. The processor boots first, prior to configuration of the programmable logic. This, along with a streamlined workflow, saves time and effort and lets software developers and hardware designers start development simultaneously.
上傳時間： 2013-11-01
上傳用戶：dingdingcandy
Xilinx is disclosing this user guide, manual, release note, and/or specification (the “Documentation”) to you solely for use in the development of designs to operate with Xilinx hardware devices. You may not reproduce, distribute, republish, download, display, post, or transmit the Documentation in any form or by any means including, but not limited to, electronic, mechanical, photocopying, recording, or otherwise, without the prior written consent of Xilinx. Xilinx expressly disclaims any liability arising out of your use of the Documentation. Xilinx reserves the right, at its sole discretion, to change the Documentation without notice at any time. Xilinx assumes no obligation to correct any errors contained in the Documentation, or to advise you of any corrections or updates. Xilinx expressly disclaims any liability in connection with technical support or assistance that may be provided to you in connection with the Information.
標簽： CPLD
上傳時間： 2013-10-22
上傳用戶：李哈哈哈
在車載自組網中，路由協議很大程度上決定了整個網絡的性能。如何有效的利用車流信息提高傳輸質量是改善路由性能的一個關鍵問題。本文基于速度-密度線性模型，提出了一種實時車流密度的路由協議RVDR（Real-time Vehicle Density Routing）。該協議通過與鄰居節點交換的速度信息，對相關道路車流密度進行預測，并給出基于車流密度信息的路徑選擇方法。仿真結果表明，與現有協議相比，RVDR協議在實時性和高效性等性能方面得到改進。
上傳時間： 2014-07-10
上傳用戶：ZJX5201314
容遲/容延網絡（Delay Tolerant Network/DTN）泛指由于節點移動、能量管理、調度等原因而出現頻繁中斷、甚至長時間處于中斷狀態的一類網絡。針對DTN具有的時延高、割裂頻繁、節點能量受限、以及節點移動性等特點，通過對DTN中基于復制策略的單播路由策略進行分類和比較，提出了如何優化DTN單播路由算法、提高網絡傳輸率的建議。
上傳時間： 2013-11-24
上傳用戶：xiaojie
很多不同的廠家生產各種型號的計算機，它們運行完全不同的操作系統，但TCP.IP協議族允許它們互相進行通信。這一點很讓人感到吃驚，因為它的作用已遠遠超出了起初的設想。T C P / I P起源于6 0年代末美國政府資助的一個分組交換網絡研究項目，到9 0年代已發展成為計算機之間最常應用的組網形式。它是一個真正的開放系統，因為協議族的定義及其多種實現可以不用花錢或花很少的錢就可以公開地得到。它成為被稱作“全球互聯網”或“因特網(Internet)”的基礎，該廣域網（WA N）已包含超過1 0 0萬臺遍布世界各地的計算機。本章主要對T C P / I P協議族進行概述，其目的是為本書其余章節提供充分的背景知識。 TCP.IP協議 縮略語 ACK (ACKnowledgment) TCP首部中的確認標志 API (Application Programming Interface) 應用編程接口 ARP (Address Resolution Protocol) 地址解析協議 ARPANET(Defense Advanced Research Project Agency NETwork) (美國)國防部遠景研究規劃局 AS (Autonomous System) 自治系統 ASCII (American Standard Code for Information Interchange) 美國信息交換標準碼 ASN.1 (Abstract Syntax Notation One) 抽象語法記法1 BER (Basic Encoding Rule) 基本編碼規則 BGP (Border Gateway Protocol) 邊界網關協議 BIND (Berkeley Internet Name Domain) 伯克利I n t e r n e t域名 BOOTP (BOOTstrap Protocol) 引導程序協議 BPF (BSD Packet Filter) BSD 分組過濾器 CIDR (Classless InterDomain Routing) 無類型域間選路 CIX (Commercial Internet Exchange) 商業互聯網交換 CLNP (ConnectionLess Network Protocol) 無連接網絡協議 CRC (Cyclic Redundancy Check) 循環冗余檢驗 CSLIP (Compressed SLIP) 壓縮的S L I P CSMA (Carrier Sense Multiple Access) 載波偵聽多路存取 DCE (Data Circuit-terminating Equipment) 數據電路端接設備 DDN (Defense Data Network) 國防數據網 DF (Don’t Fragment) IP首部中的不分片標志 DHCP (Dynamic Host Configuration Protocol) 動態主機配置協議 DLPI (Data Link Provider Interface) 數據鏈路提供者接口 DNS (Domain Name System) 域名系統 DSAP (Destination Service Access Point) 目的服務訪問點 DSLAM (DSL Access Multiplexer) 數字用戶線接入復用器 DSSS (Direct Sequence Spread Spectrum) 直接序列擴頻 DTS (Distributed Time Service) 分布式時間服務 DVMRP (Distance Vector Multicast Routing Protocol) 距離向量多播選路協議 EBONE (European IP BackbONE) 歐洲I P主干網 EOL (End of Option List) 選項清單結束 EGP (External Gateway Protocol) 外部網關協議 EIA (Electronic Industries Association) 美國電子工業協會 FCS (Frame Check Sequence) 幀檢驗序列 FDDI (Fiber Distributed Data Interface) 光纖分布式數據接口 FIFO (First In, First Out) 先進先出 FIN (FINish) TCP首部中的結束標志 FQDN (Full Qualified Domain Name) 完全合格的域名 FTP (File Transfer Protocol) 文件傳送協議 HDLC (High-level Data Link Control) 高級數據鏈路控制 HELLO 選路協議 IAB (Internet Architecture Board) Internet體系結構委員會 IANA (Internet Assigned Numbers Authority) Internet號分配機構 ICMP (Internet Control Message Protocol) Internet控制報文協議 IDRP (InterDomain Routing Protocol) 域間選路協議 IEEE (Institute of Electrical and Electronics Engineering) （美國）電氣與電子工程師協會 IEN (Internet Experiment Notes) 互聯網試驗注釋 IESG (Internet Engineering Steering Group) Internet工程指導小組 IETF (Internet Engineering Task Force) Internet工程專門小組 IGMP (Internet Group Management Protocol) Internet組管理協議 IGP (Interior Gateway Protocol) 內部網關協議 IMAP (Internet Message Access Protocol) Internet報文存取協議 IP (Internet Protocol) 網際協議 I RTF (Internet Research Task Force) Internet研究專門小組 IS-IS (Intermediate System to Intermediate System Protocol) 中間系統到中間系統協議 ISN (Initial Sequence Number) 初始序號 ISO (International Organization for Standardization) 國際標準化組織 ISOC (Internet SOCiety) Internet協會 LAN (Local Area Network) 局域網 LBX (Low Bandwidth X) 低帶寬X LCP (Link Control Protocol) 鏈路控制協議 LFN (Long Fat Net) 長肥網絡 LIFO (Last In, First Out) 后進先出 LLC (Logical Link Control) 邏輯鏈路控制 LSRR (Loose Source and Record Route) 寬松的源站及記錄路由 MBONE (Multicast Backbone On the InterNEt) Internet上的多播主干網 MIB (Management Information Base) 管理信息庫 MILNET (MILitary NETwork) 軍用網 MIME (Multipurpose Internet Mail Extensions) 通用I n t e r n e t郵件擴充 MSL (Maximum Segment Lifetime) 報文段最大生存時間 MSS (Maximum Segment Size) 最大報文段長度 M TA (Message Transfer Agent) 報文傳送代理 MTU (Maximum Transmission Unit) 最大傳輸單元 NCP (Network Control Protocol) 網絡控制協議 NFS (Network File System) 網絡文件系統 NIC (Network Information Center) 網絡信息中心 NIT (Network Interface Tap) 網絡接口栓（S u n公司的一個程序） NNTP (Network News Transfer Protocol) 網絡新聞傳送協議 NOAO (National Optical Astronomy Observatories) 國家光學天文臺 NOP (No Operation) 無操作 NSFNET (National Science Foundation NETwork) 國家科學基金網絡 NSI (NASA Science Internet) （美國）國家宇航局I n t e r n e t NTP (Network Time Protocol) 網絡時間協議 NVT (Network Virtual Terminal) 網絡虛擬終端 OSF (Open Software Foudation) 開放軟件基金 OSI (Open Systems Interconnection) 開放系統互連 OSPF (Open Shortest Path First) 開放最短通路優先 PAWS (Protection Against Wrapped Sequence number) 防止回繞的序號 PDU (Protocol Data Unit) 協議數據單元 POSIX (Portable Operating System Interface) 可移植操作系統接口 PPP (Point-to-Point Protocol) 點對點協議 PSH (PuSH) TCP首部中的急迫標志 RARP (Reverse Address Resolution Protocol) 逆地址解析協議 RFC (Request For Comments) Internet的文檔，其中的少部分成為標準文檔 RIP (Routing Information Protocol) 路由信息協議 RPC (Remote Procedure Call) 遠程過程調用 RR (Resource Record) 資源記錄 RST (ReSeT) TCP首部中的復位標志 RTO (Retransmission Time Out) 重傳超時 RTT (Round-Trip Time) 往返時間 SACK (Selective ACKnowledgment) 有選擇的確認 SLIP (Serial Line Internet Protocol) 串行線路I n t e r n e t協議 SMI (Structure of Management Information) 管理信息結構 SMTP (Simple Mail Transfer Protocol) 簡單郵件傳送協議 SNMP (Simple Network Management Protocol) 簡單網絡管理協議 SSAP (Source Service Access Point) 源服務訪問點 SSRR (Strict Source and Record Route) 嚴格的源站及記錄路由 SWS (Silly Window Syndrome) 糊涂窗口綜合癥 SYN (SYNchronous) TCP首部中的同步序號標志 TCP (Transmission Control Protocol) 傳輸控制協議 TFTP (Trivial File Transfer Protocol) 簡單文件傳送協議 TLI (Transport Layer Interface) 運輸層接口 TTL (Ti m e - To-Live) 生存時間或壽命 TUBA (TCP and UDP with Bigger Addresses) 具有更長地址的T C P和U D P Telnet 遠程終端協議 UA (User Agent) 用戶代理 UDP (User Datagram Protocol) 用戶數據報協議 URG (URGent) TCP首部中的緊急指針標志 UTC (Coordinated Universal Time) 協調的統一時間 UUCP (Unix-to-Unix CoPy) Unix到U n i x的復制 WAN (Wide Area Network) 廣域網 WWW (World Wide Web) 萬維網 XDR (eXternal Data Representation) 外部數據表示 XID (transaction ID) 事務標識符 XTI (X/Open Transport Layer Interface) X/ O p e n運輸層接口
上傳時間： 2013-11-13
上傳用戶：tdyoung
摘 要： 針對非同分布的Nakagami信道，基于矩生成函數MGF(Moment Generation Function)的分析方法，提出正交空時分組碼系統STBC(Space-Time Block Coding)的一種快速性能評估算法，不需要涉及超幾何函數積分運算，可在中高信噪比時，快速準確地估計STBC系統的符號錯誤概率性能。在平坦瑞利衰落信道下的計算機仿真表明，該算法與已有的STBC系統的近似估計算法相比，具有較優的性能。 關鍵詞： 正交空時分組碼； MIMO； MGF； 誤符號率
上傳時間： 2014-12-29
上傳用戶：如果你也聽說
為提升虛擬儀器傳輸速率與實時性能，擴展監測范圍，在VC的軟件平臺上設計了一種全功能虛擬示波器。與傳統虛擬示波器相比，該系統采用嵌入式系統完成信號采集，采用工業以太網為傳輸介質，通過線性插值算法和多線程編程思想，實現波形顯示、參數計算、頻譜分析以及波形存儲及回放功能。實驗結果表明，該虛擬示波器可以實現20 kHz采樣頻率下的波形精確顯示，達到預期的各項指標。 Abstract: o enhance the transfer rate and real-time of virtual instrument performance， expand scope of monitoring， this paper uses the VCs software platform to design a fully functional virtual oscilloscope. Compared with traditional virtual oscilloscope， this system adopts the embedded system to complete the data acquisition， industrial Ethernet as the transmission medium used by the linear interpolation algorithm and multi-threaded programming ideas， namely to achieve waveform display， parameter calculation， spectrum analysis and waveform storage and playback. Experimental results show that the virtual oscilloscope can accurately display the waveform with 20kHz sampling frequency， and achieve the desired targets.
上傳時間： 2013-11-25
上傳用戶：wbwyl
The field of microelectromechanical systems (MEMS), particularly micromachinedmechanical transducers, has been expanding over recent years, and the productioncosts of these devices continue to fall. Using materials, fabrication processes, anddesign tools originally developed for the microelectronic circuits industry, newtypes of microengineered device are evolving all the time—many offering numerousadvantages over their traditional counterparts. The electrical properties of siliconhave been well understood for many years, but it is the mechanical properties thathave been exploited in many examples of MEMS. This book may seem slightlyunusual in that it has four editors. However, since we all work together in this fieldwithin the School of Electronics and Computer Science at the University of Southampton,it seemed natural to work together on a project like this. MEMS are nowappearing as part of the syllabus for both undergraduate and postgraduate coursesat many universities, and we hope that this book will complement the teaching thatis taking place in this area.
上傳時間： 2013-10-16
上傳用戶：朗朗乾坤
User ManualRev. 1.2SmartRF® CC2420DK: Packet Sniffer for IEEE 802.15.4 and ZigBee Table of contents1 INTRODUCTION...............................................................................................31.1 HARDWARE PLATFORM.......................................................................................31.2 SOFTWARE.........................................................................................................32 USER INTERFACE..........................................................................................42.1 MENUS AND TOOLBARS.......................................................................................62.2 SETUP................................................................................................................62.3 SELECT FIELDS...................................................................................................72.3.1 Tips............................................................................................................72.4 PACKET DETAILS.................................................................................................72.5 ADDRESS BOOK..................................................................................................92.5.1 Tips............................................................................................................92.6 DISPLAY FILTER................................................................................................102.7 TIME LINE.........................................................................................................103 HELP....................................................................................................................114 TROUBLESHOOTING..................................................................................125 GENERAL INFORMATION........................................................................135.1 DOCUMENT HISTORY........................................................................................135.2 DISCLAIMER......................................................................................................135.3 TRADEMARKS...................................................................................................136 ADDRESS INFORMATION........................................................................14
上傳時間： 2014-01-14
上傳用戶：zhangyi99104144
A Computer-On-Module, or COM, is a Module with all components necessary for a bootable host computer, packaged as a super component. A COM requires a Carrier Board to bring out I/O and to power up. COMs are used to build single board computer solutions and offer OEMs fast time-to-market with reduced development cost. Like integrated circuits, they provide OEMs with significant freedom in meeting form-fit-function requirements. For all these reasons the COM methodology has gained much popularity with OEMs in the embedded industry. COM Express® is an open industry standard for Computer-On-Modules. It is designed to be future proof and to provide a smooth transition path from legacy parallel interfaces to LVDS (Low Voltage Differential Signaling) interfaces. These include the PCI bus and parallel ATA on the one hand and PCI Express and Serial ATA on the other hand.
上傳時間： 2013-11-05
上傳用戶：Wwill
