【应用手册】Cyclone III Simultaneous Switching Noise (SSN) Design Guidelines
Low-cost FPGAs designed on 90-nm and 65-nm process technologies are
made to support high performance applications with system clocks and
interfaces such as DDR2 pushing 200 MHz and LVDS applications up to
840 Mbps. The device is designed with fast edge rates which can cause
signal integrity problems such as simultaneous switching noise (SSN)
which may limit system performance and affect circuit operation. These
problems can exist even at low data rates as the signal edge rate remains
the same regardless of the data rate. For high performance applications
such as DDR2 interfaces, Altera® has largely done the work by preassigning
DQ and DQS signals and accounting for SSN when setting
performance limits. For other applications, it is up to the designer to
determine the pin placement and I/O settings to optimize performance.
By following some simple guidelines and best practices for device
settings, pin-out selection, and PCB design, you can avoid many of the
signal integrity problems for your designs.
This application note provides a framework to describe SSN and
understand the sources of SSN, discusses ways to mitigate SSN for
Cyclone® III FPGAs by using I/O settings and selecting proper I/O
standards, and provides guidelines on PCB design that are good practice
for general high speed digital designs. To demonstrate the effects of the
various recommendations, characterization data measured on Cyclone III
devices is shown throughout.
AN508.pdf
共1条
1/1 1 跳转至页
【应用手册】Cyclone III Simultaneous Switching Noise (SSN) Design Guidelines
关键词: 应用 手册 Cyclone Simultaneou
共1条
1/1 1 跳转至页
回复
有奖活动 | |
---|---|
【有奖活动】智能可穿戴设备AR/VR如何引领科技新潮流! | |
奖!发布技术笔记,技术评测贴换取您心仪的礼品 | |
【有奖活动】震撼来袭!这场直播将直击工程师的心灵! | |
“我想要一部加热台”活动,不花钱赢取开发好工具!活动开始了哦 | |
【有奖活动】伙伴们:您的“需求”解决了吗? |
打赏帖 | |
---|---|
如何实现基于NXPiMX.RT1021的BH1730采集被打赏50分 | |
【换取手持数字示波器】AHT10温度检测分享被打赏40分 | |
【换取手持数字示波器】ACM32F070开发板点亮LCD屏和触控按键,串口,ADC被打赏40分 | |
【换取手持数字示波器】ACM32F070LCD屏和触控按键功驱动蜂鸣器分享被打赏40分 | |
【换取手持数字示波器】国民技术PWM功能知识分享被打赏40分 | |
【换取手持数字示波器】放大器运放知识分享被打赏40分 | |
【分享评测,赢取加热台】+开关电源AC输入知识分享被打赏30分 | |
【换取手持数字示波器】N32G430点亮数码管与串口打印、ADC被打赏40分 | |
老胖子聊电路--分析一个反馈电路被打赏50分 | |
【换取手持数字示波器】+点亮WS2812RGB灯被打赏50分 |