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COM & IBIS-AMI: How They Relate & Where They Diverge

Masashi Shimanouchi (Design Engineer, Intel Corp.)

Mike Peng Li (Fellow, Intel Corp.)

Hsinho Wu (Designer Engineer, Intel Corp.)

Location: Ballroom F

Date: Wednesday, January 30

Time: 2:00pm - 2:40pm

Track: 08. Optimizing High-Speed Serial Design

Session Type: Technical Session

Vault Recording: TBD

Audience Level: All

Channel Operating Margin (COM) has become the standard channel compliance test method since 2014 (IEEE 802.3bj 25Gb Ethernet). It has since evolved with increasing data rates, complexities, and utilizations in the areas of device stress and compliance tests. IBIS-AMI is the de facto device modeling format for transceivers and it is used to emulate realistic link behaviors and estimate link margins. In this paper, we will conduct experiments and see how COM and IBIS-AMI relate to each other (e.g. COM 3dB vs. eye diagram) and, most importantly, identify the differences between them and the impacts in link performance analysis.


The audience will gain the knowledge on COM analysis and IBIS-AMI simulation methodology and the guidelines on interpreting the results.

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