DDR3最坏眼图技术研究

发布时间：2018-06-06 00:52

本文选题：数据率 + 最大峰值失真法　；参考：《西安电子科技大学》2013年硕士论文

【摘要】：不同工程师设计出来的DDR3系统数据率不同，如何在相同的布局空间内设计出最快的数据率是业界研究的热点。这背后的学术问题归结于对快速时域仿真技术的研究。本文对最大峰值失真法（PDA）、双边沿法（DER）及多边沿法（MER）三种主流的快速时域仿真技术进行分析，并提出了自己的方法——最优时域仿真法（BTDS）以及如何确定BTDS阶数的方法。本文为首次对PDA的不对称性问题进行系统论述以及仿真验证，并首次例证了DER可能不能得到最坏码型的结论。然后文章对PDA和BTDS的实验结果进行对比，并介绍了BTDS_Tools软件，这是BTDS成功工程化的有力证明。最后，，文章就BTDS的应用给出一实例。 BTDS既能够解决驱动器边沿不对称问题又可以得到最坏的码型及眼图，经实验结果论证优于PDA和DER。一阶BTDS经过简单升级即可解决驱动器的非线性问题，在眼高计算上与MER精度等价。但BTDS较MER在眼宽计算方面具有更好的精度，具有很大的理论和工程价值。
[Abstract]:The data rate of DDR3 system designed by different engineers is different. How to design the fastest data rate in the same layout space is a hot topic in the industry. The academic problem lies in the research of fast time domain simulation technology. In this paper, the fast time domain simulation techniques of maximum peak distortion method (PDAA), double edge method (Der) and multi-edge method (Mer) are analyzed, and their own method, the optimal time-domain simulation method (BT-DS), and how to determine the BTDS order are proposed. For the first time, the asymmetric problem of PDA is systematically discussed and verified by simulation, and the conclusion that DER may not be able to get the worst code form is illustrated for the first time. Then the experimental results of PDA and BTDS are compared, and the BTDS_Tools software is introduced, which is a powerful proof of the successful engineering of BTDS. Finally, an example of the application of BTDS is given. BTDS can not only solve the asymmetric problem of driver edge, but also get the worst pattern and eye diagram. The experimental results show that it is better than PDA and der. The nonlinear problem of the driver can be solved by simple upgrading of the first order BTDS, and the accuracy of the first order BTDS is equivalent to that of the MER in eye height calculation. But BTDS has better accuracy than MER in calculating eye width and has great theoretical and engineering value.
【学位授予单位】：西安电子科技大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TP333.1

【相似文献】