a8259 可編程中斷控制 altera提供 The a8259 is designed to simplify the implementation of the interrupt interface in 8088 and 8086 based microcomputer systems. The device is known as a programmable interrupt controller. The a8259 receives and prioritizes up to 8 interrupts, and in the cascade mode, this can be expanded up to 64 interrupts. An asynchronous reset and a clock input have been added to improve operation and reliability.
上傳時(shí)間： 2014-11-29
上傳用戶：zhyiroy
基于Message-Passing Interface （ MPI）的編程環(huán)境，以PML （Perfectly Matched Layer）為吸收邊界條件，討論了時(shí)域有限差分法FDTD的三維并行運(yùn)算情況。通過(guò)一定的數(shù)值計(jì)算，定量地給出了MPI下FDTD并行算法中的網(wǎng)格數(shù)、進(jìn)程數(shù)、分割方式三者之間的關(guān)系以及對(duì)計(jì)算效率的影響。
標(biāo)簽： FDTD MPI 并行運(yùn)算 分
上傳時(shí)間： 2013-11-05
上傳用戶：啊颯颯大師的
很多不同的廠家生產(chǎn)各種型號(hào)的計(jì)算機(jī)，它們運(yùn)行完全不同的操作系統(tǒng)，但TCP.IP協(xié)議族允許它們互相進(jìn)行通信。這一點(diǎn)很讓人感到吃驚，因?yàn)樗淖饔靡堰h(yuǎn)遠(yuǎn)超出了起初的設(shè)想。T C P / I P起源于6 0年代末美國(guó)政府資助的一個(gè)分組交換網(wǎng)絡(luò)研究項(xiàng)目，到9 0年代已發(fā)展成為計(jì)算機(jī)之間最常應(yīng)用的組網(wǎng)形式。它是一個(gè)真正的開(kāi)放系統(tǒng)，因?yàn)閰f(xié)議族的定義及其多種實(shí)現(xiàn)可以不用花錢(qián)或花很少的錢(qián)就可以公開(kāi)地得到。它成為被稱作“全球互聯(lián)網(wǎng)”或“因特網(wǎng)(Internet)”的基礎(chǔ)，該廣域網(wǎng)（WA N）已包含超過(guò)1 0 0萬(wàn)臺(tái)遍布世界各地的計(jì)算機(jī)。本章主要對(duì)T C P / I P協(xié)議族進(jìn)行概述，其目的是為本書(shū)其余章節(jié)提供充分的背景知識(shí)。 TCP.IP協(xié)議 縮略語(yǔ) ACK (ACKnowledgment) TCP首部中的確認(rèn)標(biāo)志 API (Application Programming Interface) 應(yīng)用編程接口 ARP (Address Resolution Protocol) 地址解析協(xié)議 ARPANET(Defense Advanced Research Project Agency NETwork) (美國(guó))國(guó)防部遠(yuǎn)景研究規(guī)劃局 AS (Autonomous System) 自治系統(tǒng) ASCII (American Standard Code for Information Interchange) 美國(guó)信息交換標(biāo)準(zhǔn)碼 ASN.1 (Abstract Syntax Notation One) 抽象語(yǔ)法記法1 BER (Basic Encoding Rule) 基本編碼規(guī)則 BGP (Border Gateway Protocol) 邊界網(wǎng)關(guān)協(xié)議 BIND (Berkeley Internet Name Domain) 伯克利I n t e r n e t域名 BOOTP (BOOTstrap Protocol) 引導(dǎo)程序協(xié)議 BPF (BSD Packet Filter) BSD 分組過(guò)濾器 CIDR (Classless InterDomain Routing) 無(wú)類型域間選路 CIX (Commercial Internet Exchange) 商業(yè)互聯(lián)網(wǎng)交換 CLNP (ConnectionLess Network Protocol) 無(wú)連接網(wǎng)絡(luò)協(xié)議 CRC (Cyclic Redundancy Check) 循環(huán)冗余檢驗(yàn) CSLIP (Compressed SLIP) 壓縮的S L I P CSMA (Carrier Sense Multiple Access) 載波偵聽(tīng)多路存取 DCE (Data Circuit-terminating Equipment) 數(shù)據(jù)電路端接設(shè)備 DDN (Defense Data Network) 國(guó)防數(shù)據(jù)網(wǎng) DF (Don’t Fragment) IP首部中的不分片標(biāo)志 DHCP (Dynamic Host Configuration Protocol) 動(dòng)態(tài)主機(jī)配置協(xié)議 DLPI (Data Link Provider Interface) 數(shù)據(jù)鏈路提供者接口 DNS (Domain Name System) 域名系統(tǒng) DSAP (Destination Service Access Point) 目的服務(wù)訪問(wèn)點(diǎn) DSLAM (DSL Access Multiplexer) 數(shù)字用戶線接入復(fù)用器 DSSS (Direct Sequence Spread Spectrum) 直接序列擴(kuò)頻 DTS (Distributed Time Service) 分布式時(shí)間服務(wù) DVMRP (Distance Vector Multicast Routing Protocol) 距離向量多播選路協(xié)議 EBONE (European IP BackbONE) 歐洲I P主干網(wǎng) EOL (End of Option List) 選項(xiàng)清單結(jié)束 EGP (External Gateway Protocol) 外部網(wǎng)關(guān)協(xié)議 EIA (Electronic Industries Association) 美國(guó)電子工業(yè)協(xié)會(huì) FCS (Frame Check Sequence) 幀檢驗(yàn)序列 FDDI (Fiber Distributed Data Interface) 光纖分布式數(shù)據(jù)接口 FIFO (First In, First Out) 先進(jìn)先出 FIN (FINish) TCP首部中的結(jié)束標(biāo)志 FQDN (Full Qualified Domain Name) 完全合格的域名 FTP (File Transfer Protocol) 文件傳送協(xié)議 HDLC (High-level Data Link Control) 高級(jí)數(shù)據(jù)鏈路控制 HELLO 選路協(xié)議 IAB (Internet Architecture Board) Internet體系結(jié)構(gòu)委員會(huì) IANA (Internet Assigned Numbers Authority) Internet號(hào)分配機(jī)構(gòu) ICMP (Internet Control Message Protocol) Internet控制報(bào)文協(xié)議 IDRP (InterDomain Routing Protocol) 域間選路協(xié)議 IEEE (Institute of Electrical and Electronics Engineering) （美國(guó)）電氣與電子工程師協(xié)會(huì) IEN (Internet Experiment Notes) 互聯(lián)網(wǎng)試驗(yàn)注釋 IESG (Internet Engineering Steering Group) Internet工程指導(dǎo)小組 IETF (Internet Engineering Task Force) Internet工程專門(mén)小組 IGMP (Internet Group Management Protocol) Internet組管理協(xié)議 IGP (Interior Gateway Protocol) 內(nèi)部網(wǎng)關(guān)協(xié)議 IMAP (Internet Message Access Protocol) Internet報(bào)文存取協(xié)議 IP (Internet Protocol) 網(wǎng)際協(xié)議 I RTF (Internet Research Task Force) Internet研究專門(mén)小組 IS-IS (Intermediate System to Intermediate System Protocol) 中間系統(tǒng)到中間系統(tǒng)協(xié)議 ISN (Initial Sequence Number) 初始序號(hào) ISO (International Organization for Standardization) 國(guó)際標(biāo)準(zhǔn)化組織 ISOC (Internet SOCiety) Internet協(xié)會(huì) LAN (Local Area Network) 局域網(wǎng) LBX (Low Bandwidth X) 低帶寬X LCP (Link Control Protocol) 鏈路控制協(xié)議 LFN (Long Fat Net) 長(zhǎng)肥網(wǎng)絡(luò) LIFO (Last In, First Out) 后進(jìn)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(wǎng) MIB (Management Information Base) 管理信息庫(kù) MILNET (MILitary NETwork) 軍用網(wǎng) MIME (Multipurpose Internet Mail Extensions) 通用I n t e r n e t郵件擴(kuò)充 MSL (Maximum Segment Lifetime) 報(bào)文段最大生存時(shí)間 MSS (Maximum Segment Size) 最大報(bào)文段長(zhǎng)度 M TA (Message Transfer Agent) 報(bào)文傳送代理 MTU (Maximum Transmission Unit) 最大傳輸單元 NCP (Network Control Protocol) 網(wǎng)絡(luò)控制協(xié)議 NFS (Network File System) 網(wǎng)絡(luò)文件系統(tǒng) NIC (Network Information Center) 網(wǎng)絡(luò)信息中心 NIT (Network Interface Tap) 網(wǎng)絡(luò)接口栓（S u n公司的一個(gè)程序） NNTP (Network News Transfer Protocol) 網(wǎng)絡(luò)新聞傳送協(xié)議 NOAO (National Optical Astronomy Observatories) 國(guó)家光學(xué)天文臺(tái) NOP (No Operation) 無(wú)操作 NSFNET (National Science Foundation NETwork) 國(guó)家科學(xué)基金網(wǎng)絡(luò) NSI (NASA Science Internet) （美國(guó)）國(guó)家宇航局I n t e r n e t NTP (Network Time Protocol) 網(wǎng)絡(luò)時(shí)間協(xié)議 NVT (Network Virtual Terminal) 網(wǎng)絡(luò)虛擬終端 OSF (Open Software Foudation) 開(kāi)放軟件基金 OSI (Open Systems Interconnection) 開(kāi)放系統(tǒng)互連 OSPF (Open Shortest Path First) 開(kāi)放最短通路優(yōu)先 PAWS (Protection Against Wrapped Sequence number) 防止回繞的序號(hào) PDU (Protocol Data Unit) 協(xié)議數(shù)據(jù)單元 POSIX (Portable Operating System Interface) 可移植操作系統(tǒng)接口 PPP (Point-to-Point Protocol) 點(diǎn)對(duì)點(diǎn)協(xié)議 PSH (PuSH) TCP首部中的急迫標(biāo)志 RARP (Reverse Address Resolution Protocol) 逆地址解析協(xié)議 RFC (Request For Comments) Internet的文檔，其中的少部分成為標(biāo)準(zhǔn)文檔 RIP (Routing Information Protocol) 路由信息協(xié)議 RPC (Remote Procedure Call) 遠(yuǎn)程過(guò)程調(diào)用 RR (Resource Record) 資源記錄 RST (ReSeT) TCP首部中的復(fù)位標(biāo)志 RTO (Retransmission Time Out) 重傳超時(shí) RTT (Round-Trip Time) 往返時(shí)間 SACK (Selective ACKnowledgment) 有選擇的確認(rèn) SLIP (Serial Line Internet Protocol) 串行線路I n t e r n e t協(xié)議 SMI (Structure of Management Information) 管理信息結(jié)構(gòu) SMTP (Simple Mail Transfer Protocol) 簡(jiǎn)單郵件傳送協(xié)議 SNMP (Simple Network Management Protocol) 簡(jiǎn)單網(wǎng)絡(luò)管理協(xié)議 SSAP (Source Service Access Point) 源服務(wù)訪問(wèn)點(diǎn) SSRR (Strict Source and Record Route) 嚴(yán)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(hào)標(biāo)志 TCP (Transmission Control Protocol) 傳輸控制協(xié)議 TFTP (Trivial File Transfer Protocol) 簡(jiǎn)單文件傳送協(xié)議 TLI (Transport Layer Interface) 運(yùn)輸層接口 TTL (Ti m e - To-Live) 生存時(shí)間或壽命 TUBA (TCP and UDP with Bigger Addresses) 具有更長(zhǎng)地址的T C P和U D P Telnet 遠(yuǎn)程終端協(xié)議 UA (User Agent) 用戶代理 UDP (User Datagram Protocol) 用戶數(shù)據(jù)報(bào)協(xié)議 URG (URGent) TCP首部中的緊急指針標(biāo)志 UTC (Coordinated Universal Time) 協(xié)調(diào)的統(tǒng)一時(shí)間 UUCP (Unix-to-Unix CoPy) Unix到U n i x的復(fù)制 WAN (Wide Area Network) 廣域網(wǎng) WWW (World Wide Web) 萬(wàn)維網(wǎng) XDR (eXternal Data Representation) 外部數(shù)據(jù)表示 XID (transaction ID) 事務(wù)標(biāo)識(shí)符 XTI (X/Open Transport Layer Interface) X/ O p e n運(yùn)輸層接口
上傳時(shí)間： 2013-11-13
上傳用戶：tdyoung
This application note describes a reference system which illustrates how to build an embeddedPowerPC® system using the Xilinx 1-Gigabit Ethernet Media Access Controller processor core.This system has the PLB_Gemac configured to use Scatter/Gather Direct Memory Access andthe Serializer/Deserializer (SerDes) interface. This application note describes how to set up thespecific clocking structure required for the SerDes interface and the constraints to be added tothe UCF file. This reference system is complete with a standalone software application to testsome of the main features of this core, including access to registers, DMA capabilities, transmitand receive in loopback mode. This reference system is targeted for the ML300 evaluationboard.
上傳時(shí)間： 2013-11-01
上傳用戶：truth12
The Tri-Mode Ethernet MAC (TEMAC) UltraController-II module is a minimal footprint,embedded network processing engine based on the PowerPC™ 405 (PPC405) processor coreand the TEMAC core embedded within a Virtex™-4 FX Platform FPGA. The TEMACUltraController-II module connects to an external PHY through Gigabit Media IndependentInterface (GMII) and Management Data Input/Output (MDIO) interfaces and supports tri-mode(10/100/1000 Mb/s) Ethernet. Software running from the processor cache reads and writesthrough an On-Chip Memory (OCM) interface to two FIFOs that act as buffers between thedifferent clock domains of the PPC405 OCM and the TEMAC.
上傳時(shí)間： 2013-10-26
上傳用戶：yuzsu
In today’s world of modular networking and telecommunications design, it is becomingincreasingly difficult to keep alignment with the many different and often changing interfaces,both inter-board and intra-board. Each manufacturer has their own spin on the way in whichdevices are connected. To satisfy the needs of our customers, we must be able to support alltheir interface requirements. For us to be able to make products for many customers, we mustadopt a modular approach to the design. This modularity is the one issue that drives the majorproblem of shifting our bits from one modular interface to another.
標(biāo)簽： 150 WP 兆兆 網(wǎng)絡(luò)
上傳時(shí)間： 2013-11-25
上傳用戶：suicone
This article describes the procedure to configure and program EXAR Corporation’s PowerXR Digital Power devicesvia I2C interface. Details shown here apply to XRP7704/08/40 and XRP7713/14 devices and PowerArchitectsoftware version 3.00.
標(biāo)簽： PowerXR I2C 通信 時(shí)序
上傳時(shí)間： 2013-10-20
上傳用戶：tianyi223
Contents 1 Introduction 1 2 Glosary 1 2.1 Concepts 1 2.2 Abbreviations and acronyms 4 3 Capabilities 6 4 Technical Description 6 4.1 General 6 4.2 Service oriented Allocation of Resources on the Abis interface (SARA) 8 4.3 Configuration of dedicated PDCHs in Packet Switched Domain (PSD) 10 4.4 Handling of Packet Data traffic 15 4.5 Channel selection in Cicuit Switched Domain (CSD) 19 4.6 Return of PDCHs to Cicuit Switched Domain (CSD) 22 4.7 Main changes in Ericsson GSM system R10/BSS R10 24 5 Engineering guidelines 24 6 Parameters 26 6.1 Main controlling parameters 26 6.2 Parameters for special adjustments 26 6.3 Value ranges and default values 28 7 References 29
上傳時(shí)間： 2013-11-12
上傳用戶：ainimao
uinterface fastethernet slot-number/interface-number 該命令用于指定一個(gè)快速以太網(wǎng)接口，并進(jìn)入該接口的配置模式 uip address ip-address subnet-mask [secondary] uno ip address [ip-address subnet-mask] [secondary] 設(shè)置接口的IP地址和子網(wǎng)掩碼。使用 no 選項(xiàng)可刪除接口的IP地址。 uShutdown 和no shutdown
上傳時(shí)間： 2014-12-02
上傳用戶：qwe1234
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
標(biāo)簽： 數(shù)據(jù) 分析儀 說(shuō)明書(shū)
上傳時(shí)間： 2014-01-14
上傳用戶：zhangyi99104144
蟲(chóng)蟲(chóng)下載站版權(quán)所有 京ICP備2021023401號(hào)-1
