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Sumin Choi; Heegon Kim; Jung, Daniel H.; Kim, Jonghoon J.; Jaemin Lim; Hyunsuk Lee; Kyungjun Cho; Joungho Kim
2016 IEEE International Symposium on Electromagnetic Compatibility (EMC), 2016-JulyConference Proceeding
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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