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標題: | 於DDR模組中多條耦合線的快速眼圖指標解析法 Analytic Method of Fast Eye-diagram Index for Multiple Coupled Lines in DDR |
作者: | 李愷 Kai Li |
指導教授: | 吳瑞北 Ruey-Beei Wu |
關鍵字: | 信號完整性,串擾,轉移函數,快速眼圖指標,脈波響應,眼圖,峰值失真分析, signal integrity,crosstalk,transfer function,fast eye-diagram index,single bit response,eye diagram,peak distortion analysis, |
出版年 : | 2023 |
學位: | 碩士 |
摘要: | DDR技術隨著科技進步不斷發展,越來越多的電子產品採用DDR技術來實現高速數據傳輸,高速DDR傳輸所涉及的信號完整性問題也越來越重要。在DDR設計中,需要考慮信號的傳輸延遲、反射、串擾等因素對信號完整性的影響,本文探討了在不匹配邊界條件下,通過推導單一傳輸線的轉移函數,進而推廣出多條耦合傳輸線之間的轉移函數,再利用反向傅立葉變換可以獲得其脈波響應,並基於峰值失真分析的方式,可以快速地獲取眼圖高度和寬度。相比使用正反相偽隨機二進位序列(PRBS)分析眼圖的做法,本法可以節省約15000倍的時間,並相較最劣眼圖的眼高誤差改善可高達12倍。 DDR technology has been continuously developing with the advancement of technology, and an increasing number of electronic products are adopting DDR technology to achieve high-speed data transmission. The signal integrity issues involved in high-speed DDR transmission are becoming increasingly important. In DDR design, factors such as signal propagation delay, reflection, and crosstalk need to be considered for signal integrity. This paper discusses the derivation of the transfer function of a single transmission line under mismatched boundary conditions and extends it to the transfer function between multiple coupled transmission lines. By utilizing inverse Fourier transform, we obtains the pulse response and, based on peak distortion analysis, quickly obtains the height and width of an eye diagram. Compared to the method of analyzing eye diagrams using pseudo-random binary sequence (PRBS), this approach saves approximately 15000 times the time and can improve the eye height error of the worst eye diagram by up to 12 times. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/88489 |
DOI: | 10.6342/NTU202302290 |
全文授權: | 同意授權(全球公開) |
顯示於系所單位: | 電信工程學研究所 |
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