As the signal transmission rate of the SerDes link increases,the signal integrity(SI)challenge increases further as the channel link passes through PKG and PCB boards,through holes,AC capacitors and connectors.This paper provides a transmis-sion system based on SerDes 32 Gbps-NRZ channel,optimizes the design of BGA holes in passive channels,AC coupling capaci-tor pad,and Pin pins of FMC connectors,improves the impedance consistency in channels,and establishes a more accurate pas-sive link channel model,combined with the active IBIS-AMI model of the chip,the influence of the optimized channel on the eye image is compared and analyzed,which ensures the stable transmission of 32 Gbps-NRZ high-speed signal.
SerDespassive link analysiseye image simulationIBIS-AMI model
NETL
NSTL
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