This document provides practical, common guidelines for incorporating PCI Express interconnect layouts onto Printed Circuit Boards (PCB) ranging from 4-layer desktop baseboard designs to 10- layer or more server baseboard designs. Guidelines and constraints in this document are intended for use on both baseboard and add-in card PCB designs. This includes interconnects between PCI Express devices located on the same baseboard (chip-to-chip routing) and interconnects between a PCI Express device located “down” on the baseboard and a device located “up” on an add-in card attached through a connector. This document is intended to cover all major components of the physical interconnect including design guidelines for the PCB traces, vias and AC coupling capacitors, as well as add-in card edge-finger and connector considerations. The intent of the guidelines and examples is to help ensure that good high-speed signal design practices are used and that the timing/jitter and loss/attenuation budgets can also be met from end-to-end across the PCI Express interconnect. However, while general physical guidelines and suggestions are given, they may not necessarily guarantee adequate performance of the interconnect for all layouts and implementations. Therefore, designers should consider modeling and simulation of the interconnect in order to ensure compliance to all applicable specifications. The document is composed of two main sections. The first section provides an overview of general topology and interconnect guidelines. The second section concentrates on physical layout constraints where bulleted items at the beginning of a topic highlight important constraints, while the narrative that follows offers additional insight.
標(biāo)簽： pci PCB 設(shè)計(jì)規(guī)范
上傳時(shí)間： 2013-10-15
上傳用戶：busterman
X電容和Y電容的使用及注意方法
上傳時(shí)間： 2013-11-22
上傳用戶：sevenbestfei
介紹X,Y電容的一片通俗易懂的資料
標(biāo)簽： 電容
上傳時(shí)間： 2013-10-30
上傳用戶：teddysha
PCI ExpressTM is the third generation of PCI (PeripheralComponent Interconnect) technology used to connect I/Operhipheral devices in computer systems. It is intended asa general purpose I/O device interconnect that meets theneeds of a wide variety of computing platforms such asdesktop, mobile, server and communications. It alsospecifies the electrical and mechanical attributes of thebackplane, connectors and removable cards in thesesystems.
上傳時(shí)間： 2013-11-17
上傳用戶：squershop
隨著我國(guó)通信、電力事業(yè)的發(fā)展，通信、電力網(wǎng)絡(luò)的規(guī)模越來(lái)越大，系統(tǒng)越來(lái)越復(fù)雜。與之相應(yīng)的對(duì)交流供電的可靠性、靈活性、智能化、免維護(hù)越來(lái)越重要。在中國(guó)通信、電力網(wǎng)絡(luò)中，傳統(tǒng)的交流供電方案是以UPS或單機(jī)式逆變器提供純凈不間斷的交流電源。由于控制技術(shù)的進(jìn)步、完善，（N+X）熱插拔模塊并聯(lián)逆變電源已經(jīng)非常成熟、可靠；在歐美的通信、電力發(fā)達(dá)的國(guó)家，各大通信運(yùn)營(yíng)商、電力供應(yīng)商、軍隊(duì)均大量應(yīng)用了這種更合理的供電方案。與其它方案相比較，（N+X）熱插拔模塊并聯(lián)逆變電源具有以下明顯的優(yōu)點(diǎn)。
標(biāo)簽： 熱插拔 模塊 并聯(lián) 應(yīng)用前景
上傳時(shí)間： 2014-03-24
上傳用戶：alan-ee
在深入分析了意法半導(dǎo)體公司推出的STM32、高速PCI總線以及運(yùn)動(dòng)控制卡的功能和結(jié)構(gòu)特點(diǎn)的基礎(chǔ)上，設(shè)計(jì)了一款可直接插在PCI 插槽中的伺服運(yùn)動(dòng)控制卡。不僅可大大降低了成本，更為開放式數(shù)控系統(tǒng)的研究提供了一個(gè)全新的思路。結(jié)果表明，本文所設(shè)計(jì)的伺服控制卡滿足了目前控制系統(tǒng)的性能和要求。
上傳時(shí)間： 2014-12-25
上傳用戶：l銀幕海
詳細(xì)介紹了PCI9052接口器件的功能、結(jié)構(gòu)和使用方法，并結(jié)合實(shí)際給出了基于PCI9052器件開發(fā)PCI總線接口卡的應(yīng)用實(shí)例。 Abstract: The main functions,structures and usage of PCI9052inferface chip are introduced in detail in this paper.And an application example of designing PCI bus interface card based on PCI9052is proposed in this paper.
上傳時(shí)間： 2013-10-16
上傳用戶：togetsomething
提出了采用兩段式同軸波紋慢波結(jié)構(gòu)實(shí)現(xiàn)雙頻高功率微波輸出的相對(duì)論返波振蕩器， 推導(dǎo)了該結(jié)構(gòu)的TM0n模式色散方程，數(shù)值求解了兩段式同軸波紋慢波結(jié)構(gòu)TM0n模色散曲線，分析了該器件X波段雙頻高功率微波輸出的產(chǎn)生機(jī)理， 分析中考慮了電子注在慢波結(jié)構(gòu)第二段工作效率不變和下降時(shí)的雙頻工作點(diǎn)情況，并運(yùn)用2.5 維全電磁粒子模擬程序驗(yàn)證了雙頻微波信號(hào)的可靠性。關(guān)鍵詞高功率微波；雙頻；X 波段；相對(duì)論返波振蕩器 當(dāng)前， 應(yīng)用于高功率微波效應(yīng)的微波器件只有一個(gè)主頻率，已有的實(shí)驗(yàn)結(jié)果表明，在現(xiàn)有條件下，單頻高功率微波用于攻擊敵方的電子系統(tǒng)所需的功率遠(yuǎn)遠(yuǎn)大于單只高功率微波源所能產(chǎn)生的功率，即破壞閾值很高[1]。但是，如果用兩個(gè)或多個(gè)頻率相近的高功率微波波束產(chǎn)生拍頻后用于攻擊電子系統(tǒng)，那么所需的功率密度將大大減小，即效應(yīng)閾值大大下降， 采用這種方式將有可能在現(xiàn)有的技術(shù)下使高功率微波實(shí)用化[2]，但是雙頻及多頻高功率微波源器件的研究目前是十分前沿的課題，處于剛起步階段，在國(guó)內(nèi)外極少有報(bào)道[2～4]，因而，用單個(gè)微波源器件產(chǎn)生穩(wěn)定輸出的雙頻甚至多頻高功率微波具有重要的實(shí)際應(yīng)用價(jià)值和學(xué)術(shù)價(jià)值，是高功率微波領(lǐng)域又一個(gè)新興的研究方向， 在高功率微波武器和新體制雷達(dá)等方面將有良好的應(yīng)用前景。
上傳時(shí)間： 2013-10-31
上傳用戶：kxyw404582151
PCI 9656是PLX公司設(shè)計(jì)的一款高速PCI I/O芯片，可應(yīng)用于66MHz、64bit PCI和CompactPCI總線。文章簡(jiǎn)述了PCI 9656的主要功能，介紹了一種應(yīng)用PCI 9656的CompactPCI數(shù)據(jù)接收卡設(shè)計(jì)。設(shè)計(jì)中采用MAXII系列CPLD建立了PCI 9656與FIFO間的數(shù)據(jù)通道，可滿足高速數(shù)據(jù)傳輸?shù)囊蟆?/p>
標(biāo)簽： 9656 PCI 數(shù)據(jù)接收
上傳時(shí)間： 2014-11-28
上傳用戶：1184599859
PCI總線是Pentium主機(jī)最常見的總線,基于PCI總線形成的CompactPCI和PXI總線廣泛地應(yīng)用在儀器和自動(dòng)化領(lǐng)域。PCI適配卡的接口設(shè)計(jì)變得越來(lái)越重要。本文對(duì)PCI專用接口電路PCI9052的功能進(jìn)行了研究與分析,并給出了一個(gè)應(yīng)用實(shí)例設(shè)計(jì)。
上傳時(shí)間： 2013-11-02
上傳用戶：unmwq
蟲蟲下載站版權(quán)所有 京ICP備2021023401號(hào)-1
