200G 扩展网络中的铜互连.pdf

1、Raymond LawCopper Interconnects in 200G Scale-Up NetworksCopper Interconnects in 200G Scale-Up NetworksRaymond LawLOTESCompany:LOTES is a precision electronic interconnect components and hardware supplier since 1986.Based in Taiwan,LOTES designs and manufactures a wide range of components including

2、state-of-the-art high-speed cable/connector,cooling,and power connectors.LOTES is an active participant in many industry workgroups including PCI-Sig,JEDEC,HDMI Forum,USB-IF,VESA,SNIA,and OCP.Visit us at booth C9.Presenter:Raymond Law()is an electrical engineer focuses on high-speed signal integrity

3、.With over 20 years of industry experience,Raymond is a R&D Project Manager and represents LOTES in various industry workgroups.IntroductionScale-Up NetworkInterconnect Length RequirementsBackplane TopologiesConnector and cableCo-Package Copper(CPC)and Near-Package Copper(NPC)RepeatersFront-Panel Pl

4、uggable TopologiesActive CableCopper/Optical Interconnect Transition PointsOther High-Speed Interconnect NeedsCall to ActionAgendaHigh bandwidth,low latency,XPU-to-XPU connectionXPUs+memories become one unified poolWithin a node,but distance is likely 1mIEEE 802.3dj 212.5Gb/s PAM4Scale-Up NetworkUAL

5、ink_200 Rev1.0 specificationScale-Up Network Length RequirementsWithin rack,1 hop,XPU switch XPURack to rack,2 hops,XPU switch switch XPUIf the cables do not need to go through rail/track,estimateWithin rack:1m to 2mAdjacent rack:1.5m to 2mFour racks:7m(4 x 1.75m)Reference:OCP PCIe Extended Connecti

6、vity Requirements WhitepaperXPU+board trace+BP connector/cable/connector+board trace+switch ASICIEEE 802.3dj has roughly 28dB pin-to-pin loss budget at 53.125GHzWith a standard 1m cable,board route would be short,roughly 4”max on each board,depending on board material.Backplane TopologiesSource:Nvid