异构网络交换机光电一体接口卡设计

his paper introduced a kind of fiber-copper unified interface card used in heterogeneous network switch. The front end link used improved SFP interface module to realize heterogeneous access, back end used FPGA normalization MAC interface to achieve unified carry. This paper gives the design methods of heterogeneous link access system using GTX as the center part. This paper focuses on the copper interface module, which cheat the MAC interface in physical layer and the miniaturization of PCB design. Analyze high-speed serial signal integrity of the interface card. Finally, verify the correctness of the system architecture by simulation and actual testing.