标签：PCB,SMT技术知识, 本站提供DDR 1&2&3的“读”和“写”眼图分析2017免费下载,http://www.2xuewang.com
ead burst and write burst in DDR data bus, and the timing is different between read burstand write burst. So it is impossible to get clear eye diagram directly. This article introduces aninnovated method to separate read eye diagram and write eye diagram, and introduces an innovated method about how to define mask for read eye diagram and write eye diagram.DDR 1&2&3 总线概览DDR 全名为Double Data Rate SDRAM ，简称为DDR。现在DDR 技术已经发展到了DDR3，理论上速度可以支持到1600MT/s。DDR 总线走线数量多，速度快，操作复杂，探测困难，给测试和分，大小：249 KB