摘要: 串行传输技术具有更高的传输速率和更低的设计成本, 已成为业界首选, 被广泛应用于高速通信领域。提出了一种新的高速串行传输接口的设计方案, 改进了Aurora 协议数据帧格式定义的弊端, 并采用高速串行收发器Rocket I/O, 实现数据率为2.5 Gbps的高速串行传输。关键词: 高速串行传输; Rocket I/O; Aurora 协议 为促使FPGA 芯片与串行传输技术更好地结合以满足市场需求, Xilinx 公司适时推出了内嵌高速串行收发器RocketI/O 的Virtex II Pro 系列FPGA 和可升级的小型链路层协议———Aurora 协议。Rocket I/O支持从622 Mbps 至3.125 Gbps的全双工传输速率, 还具有8 B/10 B 编解码、时钟生成及恢复等功能, 可以理想地适用于芯片之间或背板的高速串行数据传输。Aurora 协议是为专有上层协议或行业标准的上层协议提供透明接口的第一款串行互连协议, 可用于高速线性通路之间的点到点串行数据传输, 同时其可扩展的带宽, 为系统设计人员提供了所需要的灵活性[4]。但该协议帧格式的定义存在弊端,会导致系统资源的浪费。本文提出的设计方案可以改进Aurora 协议的固有缺陷,提高系统性能, 实现数据率为2.5 Gbps 的高速串行传输, 具有良好的可行性和广阔的应用前景。
上传时间： 2013-10-13
上传用户：lml1234lml
减小电磁干扰的印刷电路板设计原则 内 容 摘要……1 1 背景…1 1.1 射频源.1 1.2 表面贴装芯片和通孔元器件.1 1.3 静态引脚活动引脚和输入.1 1.4 基本回路……..2 1.4.1 回路和偶极子的对称性3 1.5 差模和共模…..3 2 电路板布局…4 2.1 电源和地…….4 2.1.1 感抗……4 2.1.2 两层板和四层板4 2.1.3 单层板和二层板设计中的微处理器地.4 2.1.4 信号返回地……5 2.1.5 模拟数字和高压…….5 2.1.6 模拟电源引脚和模拟参考电压.5 2.1.7 四层板中电源平面因该怎么做和不应该怎么做…….5 2.2 两层板中的电源分配.6 2.2.1 单点和多点分配.6 2.2.2 星型分配6 2.2.3 格栅化地.7 2.2.4 旁路和铁氧体磁珠……9 2.2.5 使噪声靠近磁珠……..10 2.3 电路板分区…11 2.4 信号线……...12 2.4.1 容性和感性串扰……...12 2.4.2 天线因素和长度规则...12 2.4.3 串联终端传输线…..13 2.4.4 输入阻抗匹配...13 2.5 电缆和接插件……...13 2.5.1 差模和共模噪声……...14 2.5.2 串扰模型……..14 2.5.3 返回线路数目..14 2.5.4 对板外信号I/O的建议14 2.5.5 隔离噪声和静电放电ESD .14 2.6 其他布局问题……...14 2.6.1 汽车和用户应用带键盘和显示器的前端面板印刷电路板...15 2.6.2 易感性布局…...15 3 屏蔽..16 3.1 工作原理…...16 3.2 屏蔽接地…...16 3.3 电缆和屏蔽旁路………………..16 4 总结…………………………………………17 5 参考文献………………………17
上传时间： 2013-10-22
上传用户：a6697238
The application wizard has created this SoccerDoctor application for you. This application not only demonstrates the basics of using the Microsoft Foundation Classes but is also a starting point for writing your application.
标签： application SoccerDoctor created wizard
上传时间： 2015-08-09
上传用户：er1219
为你的MFC程序添加宏脚本语言。AppWizard has created this ScriptDemo application for you. This application not only demonstrates the basics of using the Microsoft Foundation classes but is also a starting point for writing your application.
标签： application ScriptDemo AppWizard created
上传时间： 2014-01-27
上传用户：彭玖华
AppWizard has created this DSX01 DLL for you. This DLL not only demonstrates the basics of using the Microsoft Foundation classes but is also a starting point for writing your DLL.
标签： demonstrates AppWizard DLL created
上传时间： 2015-09-21
上传用户：ryb
AppWizard has created this SEEDDEC2XXX application for you. This application not only demonstrates the basics of using the Microsoft Foundation classes but is also a starting point for writing your application.
标签： application demonstrates SEEDDEC2XXX AppWizard
上传时间： 2015-09-29
上传用户：zuozuo1215
The application wizard has created this UCMSGIP application for you. This application not only demonstrates the basics of using the Microsoft Foundation Classes but is also a starting point for writing your application.
标签： application UCMSGIP created wizard
上传时间： 2015-12-08
上传用户：小草123
Base64算法，This application not only demonstrates the basics of using the Microsoft Foundation classes but is also a starting point for writing your application
上传时间： 2015-12-22
上传用户：wangyi39
股票源码The application wizard has created this SCDemo application for you. This application not only demonstrates the basics of using the Microsoft Foundation Classes but is also a starting point for writing your application.
标签： application created SCDemo wizard
上传时间： 2016-01-08
上传用户：chenjjer
This application not only demonstrates the basics of using the Microsoft Foundation classes but is also a starting point for writing your application.
标签： demonstrates application Foundation Microsoft
上传时间： 2013-12-18
上传用户：klin3139
