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pci

pci全称Physical Cell Identifier,即物理小区标识,LTE中终端以此区分不同小区的无线信号。LTE系统提供504个pci,和TD-SCDMA系统的128个扰码概念类似,网管配置时,为小区配置0~503之间的一个号码。LTE小区搜索流程中通过检索主同步序列(PSS,共有3种可能性)、辅同步序列(SSS,共有168种可能性),二者相结合来确定具体的小区ID。
  • 利用高速FPGA实现pci总线接口的设计方案

    pci是一种高性能的局部总线规范,可实现各种功能标准的pci总线卡。本文简要介绍了pci总线的特点、信号与命令,提出了一种利用高速FPGA实现pci总线接口的设计方案。\r\n

    标签: FPGA pci 总线接口 设计方案

    上传时间: 2013-08-30

    上传用户:brain kung

  • 基于FPGA的pci总线接口的设计方案

    基于FPGA的pci总线接口的设计方案\r\n~!

    标签: FPGA pci 总线接口 设计方案

    上传时间: 2013-09-01

    上传用户:heart520beat

  • pci ExpressTM Architecture

    pci ExpressTM Architecture Add-in Card Compliance Checklist for the pci Express Base 1.0a SpecificationThe pci Special Interest Group disclaims all warranties and liability for the use of this document and the information contained herein and assumes no responsibility for any errors that may appear in this document, nor does the pci Special Interest Group make a commitment to update the information contained herein.Contact the pci Special Interest Group office to obtain the latest revision of this checklistQuestions regarding the ths document or membership in the pci Special Interest Group may be forwarded tpci Special Interest Group5440 SW Westgate Drive #217Portland, OR 97221Phone: 503-291-2569Fax: 503-297-1090 DISCLAIMERThis document is provided "as is" with no warranties whatsoever, including any warranty of merchantability, noninfringement, fitness for any particular purpose, or any warranty otherwise arising out of any proposal, specification, or sample.  The pci SIG disclaims all liability for infringement of proprietary rights, relating to use of information in this specification.  No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted herein.

    标签: Architecture ExpressTM pci

    上传时间: 2013-11-03

    上传用户:gy592333

  • pci e PCB设计规范

    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.  

    标签: pci PCB 设计规范

    上传时间: 2013-10-15

    上传用户:busterman

  • pci Express电源解决方案

      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.

    标签: Express pci 电源解决方案

    上传时间: 2013-11-17

    上传用户:squershop

  • 基于pci总线的STM32运动控制卡的设计

    在深入分析了意法半导体公司推出的STM32、高速pci总线以及运动控制卡的功能和结构特点的基础上,设计了一款可直接插在pci 插槽中的伺服运动控制卡。不仅可大大降低了成本,更为开放式数控系统的研究提供了一个全新的思路。结果表明,本文所设计的伺服控制卡满足了目前控制系统的性能和要求。

    标签: pci STM 32 总线

    上传时间: 2014-12-24

    上传用户:l银幕海

  • 基于pci9052的pci局部总线应用

    详细介绍了pci9052接口器件的功能、结构和使用方法,并结合实际给出了基于pci9052器件开发pci总线接口卡的应用实例。 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.

    标签: pci 9052 局部 总线

    上传时间: 2013-10-15

    上传用户:togetsomething

  • 应用pci 9656的数据接收卡设计

    pci 9656是PLX公司设计的一款高速pci I/O芯片,可应用于66MHz、64bit pci和Compactpci总线。文章简述了pci 9656的主要功能,介绍了一种应用pci 9656的Compactpci数据接收卡设计。设计中采用MAXII系列CPLD建立了pci 9656与FIFO间的数据通道,可满足高速数据传输的要求。

    标签: 9656 pci 数据接收

    上传时间: 2014-11-28

    上传用户:1184599859

  • pci9052在pci适配卡设计中研究与应用

    pci总线是Pentium主机最常见的总线,基于pci总线形成的Compactpci和PXI总线广泛地应用在仪器和自动化领域。pci适配卡的接口设计变得越来越重要。本文对pci专用接口电路pci9052的功能进行了研究与分析,并给出了一个应用实例设计。

    标签: pci 9052 适配卡

    上传时间: 2013-11-01

    上传用户:unmwq

  • pci-51XX智能CAN接口卡用户手册V1.2

    一、版权信息pci-51XX系列智能CAN接口卡及相关软件均属广州市周立功单片机发展有限公司所有,其产权受国家法律绝对保护,未经本公司授权,其他公司、单位、代理商及个人不得非法使用和拷贝,否则将受到国家法律的严厉制裁。您若需要我公司产品及相关信息,请及时与我们联系,我们将热情接待。广州周立功单片机发展有限公司保留在任何時候修订本用户手册且不需通知的权利。 二、功能特点pci-51XX智能CAN接口卡是具有pci接口的高性能CAN总线通讯适配卡,它使PC机方便地连接到CAN总线上,实现CAN2.0B协议的数据通讯。pci-51XX智能CAN接口卡采用标准pci接口,实现与主机PC的高速数据交换。接口卡上自带光电隔离模块,使PC机避免由于地环流的损坏,增强系统在恶劣环境中使用的可靠性。pci-51XX智能CAN接口卡配有可在Win98/Me、Win2000/XP下工作的驱动程序,使用通用CAN接口库,使开发简单化,并包含在VC++、C++Builder、Delphi、VB下开发的详细应用例程。

    标签: pci 1.2 CAN 51

    上传时间: 2013-10-07

    上传用户:wangyi39