DC25_SLIDES_Track09_DeepDivingIntoSimilaritiesAnd_Shimanouchi.pdf

1、Information Classification:GeneralWelcome to ConferenceJanuary 2830,2025Santa Clara Convention Center1ExpoJanuary 2930,2025 Information Classification:GeneralDeep Diving into Similarities&Differences in 200+Gbps Receiver Error Mechanism&Error Pattern of DFE vs MLSDTrack9 TutorialMasashi Shimanouchi(

2、Altera)Hsinho Wu(Altera)Mike Li(Altera)2Information Classification:General Introductiono How is 200+Gbps different from previous generation?Some Basic Knowledgeso Reference:“Birds-Eye Viewing 200+Gbps per Lane&Beyond with Various Signal-to-Noise Ratio Metrics”,DesignCon 2023 Tutorial Go Deeper into

3、200+Gbps DFE vs MLSDoMore Elaborated Mathematical Analysis Hold on Tight!Outline3 MLSD and MLSE are interchangeably used or the same in this tutorialInformation Classification:General Introductiono How is 200+Gbps different from previous generation?Some Basic Knowledgeso Ref.“Birds-Eye Viewing 200+G

4、bps per Lane&Beyond with Various Signal-to-Noise Ratio Metrics”,DesignCon 2023 Tutorial Go Deeper into 200+Gbps DFE vs MLSDoMore Elaborated Mathematical Analysis Hold on Tight!Outline4Information Classification:General IL(Channel+Packages)Noise Level at Detector RX Architecture Ethernet Reference RX

5、(COM)Signal ProcessingHow is 200+Gbps Different from Previous Gen?5PAM4ModEQFECencodePkgEQDetectFECdecodePkgChannelInformation Classification:General Channel loss itself would be improved IL of our interest gets larger because of higher Nyquist frequencyo Residual ISI after EQ may get largero Noise

6、may be amplified more by larger EQInsertion Loss6Freq GHz56(224Gbps)IL dB28(112Gbps)14(56Gbps)Channel is improved,but Information Classification:General Noise PSD(Power Spectrum Density)would be improved Noise amplitude at detector gets larger because of higher Nyquist frequencyNoise Level at Detect