448G连接器和PCB布线研究.pdf

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1、Page 1April 30,2025YAMAICHI ELECTRONICS CO.,LTD.Toshiyasu ItoConnector and PCB Routing Study for 448GInsertion loss and Routing Length of VLC(Vertical Line Card)Page 2Abstract:-Basically I will explain of the connector and high speed routing of PCB by Vertical Line Card(VLC)structure for 448G.-VLC i

2、s a structure that uses a vertical line card.See after page 4.-The OSFP connector and cage are mounted vertically on the front side of the board,and the ASIC package is mounted on the back side or other Vertical PCB.This brings the connector and ASIC-package closer together,allowing for a shorter di

3、stance for high-speed signal wiring.-We mainly studied the possibility of 448G by High speed routing of PCB by VLC.Supporters:-Chris Cole,Coherent Corp.-Peter Winzer,Nubis Communications-Toshiaki Sakai,SocionextPage 3What is Vertical Line Card(VLC)StructuresPage 42 x FAN(80mm)4x8x4 Cage(Total 128 po

4、rt)Tubes for LiquidLiquid Pump UnitVLC Cage PCB2x PSUCold Plate Liquid Inlet and Outlet to Cold PlateVLC ASIC PCBSwitch Over View of VLC-OSFP(RHS)Cage and Connector Structure:128 ports 4 RU ReferencePage 54x8x4 Cage(Total 128 port)VLC Cage PCBCold Plate Liquid Inlet and Outlet to Cold PlateVLC ASIC

5、PCBExploded View2 x ASICPage 6Study of ModulesPage 7Standard Module:OSFP-RHS:8 lanes(16 Differential Pairs/DP)Standard Module:OSFP-XD-RHS:16 lanes(32 DP)Reference:OSFP Module_Specification_Rev5Reference:Specification for OSFP-XD Rev 1.07Page 8Idea of High Density Module:32 lanes(64 DP)32 lanes by 28

6、0 pins(8x36)And 2D connector size-PWR=12 pins,Control=4 pinsRefer:oif2024.610.05-High Density Connector Project Start Proposaloif2025.010.02-High Density Connector-Sizing ConsiderationsPage 9Idea of High Density Module:64 lanes(128 DP)64 lanes by 562 pins(12x48)And 2D connector size12345678910111213