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http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/59681
標題: | 雙邊飛越式結構對一推八記憶體系統之信號完整度改善與分析 Signal Integrity Analysis and Improvement on Dual Sided Flyby Topology for 1 Controller to 8 Memories System |
作者: | Chih-Chia Chiu 邱致嘉 |
指導教授: | 吳瑞北(Ruey-Beei Wu) |
關鍵字: | 快閃記憶體,雙邊飛越式結構,類神經網絡,眼圖,信號完整度,色散圖,能隙, flash memories,dual sided flyby,artificial neural network,eye diagram,signal integrity,dispersion diagram,band gap, |
出版年 : | 2017 |
學位: | 碩士 |
摘要: | 目前逐漸廣泛應用的SSD快閃記憶體系統,其傳輸速度已高達266Mbps至533Mbps,而且最多需要一次推動8個通道,加上各通道之間也互有影響,因此如何設計訊號佈線讓記憶體系統各個通道的信號品質達到規範要求,便成為能將記憶體系統的傳輸速度與效能推向更高速領域的關鍵技術。
本研究主要分為兩個部分,第一個部分針對現有的兩大架構:飛越式結構以及星狀結構進行分析,並比較兩者的優缺點;第二個部分提出新的架構──雙邊飛越式結構,並且以類神經網絡的方式來取得最佳化設計的參數,並以能隙的概念解釋其改善原理。針對能隙效果不顯著的情形,也提供了週期性結構特性阻抗的設計方式進行改善。 透過採納本研究提出的雙邊飛越式結構,將有助於在一推多記憶體系統上的設計與研發,並提升整體系統的效能。 SSD flash memories system, one of the most extensive applications nowadays, has been accelerated up to 266Mbps~533Mpbs, and has been required to drive 8 channels at most simultaneously, which means that influence of channels on each other is quite significant. Consequently, the way to design signal layout in order to meet the specification becomes a key point to improve performance and data rate. In this thesis, there are two major parts. In the first part, we analyze two dominating topologies of memories system: flyby and star, and compare their pros and cons with each other. Secondly, we provide a novel structure─dual sided flyby, which is derived from flyby. We also utilize artificial neural network to acquire optimal design parameter, and introduce electromagnetic band gap to explain the reason why it meliorates. We also introduce characteristic impedance of periodic structure to reform eye diagrams for the cases that electromagnetic band gap is not remarkable. With the aid of dual sided flyby, the performance of one to multiple memories system obtains the potentiality to be substantially enhanced. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/59681 |
DOI: | 10.6342/NTU201700612 |
全文授權: | 有償授權 |
顯示於系所單位: | 電信工程學研究所 |
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