Eye-diagram estimation and analysis of High-Bandwidth Memory (HBM) interposer channel with crosstalk reduction schemes on 2.5D and 3D IC

Sumin Choi, Heegon Kim, D. Jung, Jonghoon J. Kim, Jaemin Lim, Hyunsuk Lee, Kyungjun Cho, Joungho Kim
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引用次数: 6

Abstract

In this paper, eye-diagrams of High-Bandwidth Memory (HBM) interposer channel with crosstalk reduction schemes on 2.5D / 3D IC are estimated and analyzed. As data rate increases and metal-to-metal space decreases to achieve higher system bandwidth, crosstalk effects degrade the signal integrity. Therefore, estimation and reduction of the crosstalk effects are essential on HBM interposer channel. In order to estimate crosstalk effects in short time with high accuracy, PDA-based estimation method is proposed. In addition to the proposed method, wide space and guard trace with ground vias structures are suggested and compared based on the estimated eye-diagrams. With the estimated eye-diagrams, voltage fluctuation on DC levels due to the crosstalk effects can be analyzed. Worst and statistical eye-diagrams of interposer channels including crosstalk effects are estimated. Since the proposed method needs only output and crosstalk response of the channel, the proposed method can be applied to multiple wide I/O channels.
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2.5D和3D集成电路上具有串扰抑制方案的HBM中间通道眼图估计与分析
本文对2.5D / 3D集成电路上具有串扰抑制方案的HBM中间通道眼图进行了估计和分析。随着数据速率的提高和金属间空间的减小以获得更高的系统带宽,串扰效应会降低信号的完整性。因此,对HBM中间信道的串扰效应进行估计和抑制是至关重要的。为了在短时间内高精度地估计串扰效应,提出了基于pda的估计方法。在此基础上,提出了宽空间和保护迹与地面过孔结构的对比方法。利用估计的眼图,可以分析直流电平上由于串扰效应引起的电压波动。估计了包括串扰效应在内的中间通道的最坏情况和统计眼图。由于所提出的方法只需要通道的输出和串扰响应,因此所提出的方法可以应用于多个宽I/O通道。
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