Summary
2019 Joint International Symposium on Electromagnetic Compatibility and Asia-Pacific International Symposium on Electromagnetic Compatibility, Sapporo
2019
Session Number:TuePM2B
Session:
Number:TuePM2B.3
Modified Channel Quality Comparison for PCI Express* 4.0 (I)
Bor-Ray (Yi-Ren) Su, Denis Chen, Jimmy Hsu, Yuan Liang Li,
pp.-
Publication Date:2016/10/5
Online ISSN:2188-5079
DOI:10.34385/proc.58.TuePM2B.3
Summary:
The Channel Quality Comparison (CQC) method was introduced in 2011 [1]. It is commonly used in the pre-layout simulation to estimate the risk of the channel, for high speed SERDES (Serializer/Deserializer) and DDR interfaces. However, once the equalizer inside the transmitter (Tx) and the receiver (Rx) becomes more and more powerful, the eye height (EH) and the eye-width (EW) will have less difference in thee effective range. Since CQC is a comparative method which relies on comparing the EH and EW between the current channel and the reference one, this phenomenon will introduce uncertainty. Although using the DOE/RSM (Design of Experiment /Response Surface Methodology) method may overcome the issue, it simply requires more resource. Not all projects or channels have the luxury to conduct a comprehensive simulation. In this paper, a modified CQC method is proposed to find a balance between speed and the accuracy.