DC25_SLIDES_Track07_NovelMethodForImprovingDifferential_Bloch_V3.pdf

1、Information Classification:GeneralWelcome to ConferenceJanuary 2830,2025Santa Clara Convention Center1ExpoJanuary 2930,2025 Information Classification:GeneralNovel Method for Improving Differential to Common Signal Integrity Results for 112GB/224GBGal Matarasso,Xsight LabsRoee Bloch,Xsight Labs2Info

2、rmation Classification:GeneralImageImage SPEAKERSGal MatarassoSignal Integrity Engineer,Xsight L Signal Integrity and Power Integrity engineer for high-speed communication systems at Xsight Labs.Roee BlochSignal Integrity and Power Integrity Engineer,Xsight LSignal Integrity and Power Integrity expe

3、rt at Xsight LabsResponsible for developing next generations of packages and board focus on high-speed interfaces.3Information Classification:General In this session we will discuss differential to common mode conversion in high-speed interfaces such as 112GB and 224GB SerDeses.We will talk mostly a

4、bout transmitted differential signal and its conversion into common signal(noise)(SCD21).We will discuss the root causes,the problems and how to resolve them.We will show problems we had on our projects due to mode conversion issues and how it affected our system capabilities.We will demonstrate how

5、 we improved the differential to common mode conversion by applying a few simple steps.Note:We will use mixed mode S parameter notation.Abstract4Information Classification:General What is differential to common mode conversion?What are the root causes for D2C?Why should we care?What does IEEE 802.3c

6、k standard says about D2C?Can we count on ECAD tools for accurately calculating the channels mode conversion?How can we reduce mode conversion at the PCB level?Main Questions5Information Classification:General SDD11 Reflected differential energy back to the source when injecting differential signal.