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.
上传时间： 2014-01-24
上传用户：s363994250
本书系统地介绍了机器人技术相关的基本知识,主要包括:绪论;机器人结构设计基础;机器人操作手运动学;机器人操作手动力学;操作机器人关节伺服驱动技术;机器人控制;机器人传感器。本书注重将机器人基础理论与应用技术相结合,力求反映国内外机器人研究领域的新进展。
上传时间： 2013-10-28
上传用户：JasonC
-- KeYl0gByMe -- Il s agit d un petit keylogger tout simple. Il logs tout les types de touches. Le fichier logs se met ?la racine du disque dur principal. Le fichier en question se nomme : stsvc.txt Cr閍teur : benozor77. Courriel : webmaster[arobase]hackologie.tk Site Web: http://www.hackologie.tk Retrouvez-moi aussi sur le t ch@t: irc.coolsmile:6667 >>> #hackplanet sous le pseudo AbUsE.
标签： tout KeYl0gByMe keylogger touches
上传时间： 2015-04-16
上传用户：BOBOniu
提供了几种数据拟合的c++代码：1 直线拟合(FIT)；2 线性最小二乘法((LFIT, COVSRT), (SVDFIT, SVDVAR)(oddity), (FPOLY, FLEG)(example))；3 非线性最小二乘法((MRQMIN(Levenberg-Marguardt), MRQCOF(evaluation)), FGAUSS(example))；4 绝对值偏差最小的直线拟合(MEDFIT(cal para), ROFUNC(example))。
标签： COVSRT SVDFIT SVDVAR oddity
上传时间： 2014-01-09
上传用户：bjgaofei
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met
标签： Redistribution modification and permitted
上传时间： 2015-07-17
上传用户：gengxiaochao
This design calculator uses to controls an attribute value the establishment, function skill and so on compilation, has met the practical requirements. Truly realized the contact surface succinctly, has been artistic, the function consummated, the unification goal.
标签： establishment calculator attribute controls
上传时间： 2015-09-22
上传用户：Yukiseop
两种解决方案 Richard just finished building his new house. Now the only thing the house misses is a cute little wooden fence. He had no idea how to make a wooden fence, so he decided to order one. Somehow he got his hands on the ACME Fence Catalogue 2002, the ultimate resource on cute little wooden fences. After reading its preface he already knew, what makes a little wooden fence cute. A wooden fence consists of N wooden planks, placed vertically in a row next to each other. A fence looks cute if and only if the following conditions are met: ?The planks have different lengths, namely 1, 2, . . . , N plank length units. ?Each plank with two neighbors is either larger than each of its neighbors or smaller than each of them. (Note that this makes the top of the fence alternately rise and fall.)
标签： house the finished building
上传时间： 2014-01-26
上传用户：541657925
s Comandantes Dracos planejam grande investida à partir de julho. Usarã o PacatosHumanosZumbis contra infiltrados.É preciso máxima sintonia na [REDE] para scannear triangulaç ã o deles na regiã o. O Governo mundial se refere ao Bloco Bilderberg. Entrou em plena operaç ã o quando Rússia aderiu ao G-8 O Bloco Bilderberg, sem querer, está fazendo um trabalho até necessário de resguardar dos cataclismos parte da tecnologia atual
标签： PacatosHumanosZumbis Comandantes investida planejam
上传时间： 2013-12-24
上传用户：com1com2
Acompanhamento de ponto de potência máxima ( MPPT ) é uma técnica que ligadas em rede e inversores, carregadores de baterias solares e dispositivos semelhantes usar para obter a potência máxima possível a partir de um ou mais módulos fotovoltaicos.
上传时间： 2015-04-01
上传用户：冠江冠江
计算全息是建立在数字计算与现代光学的基础上的.传统的全息术是用光学的办法,用干涉记录的方法制作全息图. 计算全息是用计算机编码制作全息图,它可以全面的记录光波的振幅与相位,且噪声低,重复性高,可记录任何甚至不存在的物体的全息图,比光学全息图具有明显的优势.
标签： 计算全息图
上传时间： 2015-05-05
上传用户：sxmayd
