The DAQPATH readout system of the Serenity boards for the CMS Phase-II Upgrade

The Serenity boards are ATCA custom used in the readout of Phase-II CMS detector. Each board can handle up to 144 optical serial links (up 25Gb/s each) and supports two high-performance FPGAs. In several applications is required aggregate raw events (Front-End data) from detector at every Accepted Level 1 trigger route this event fragment central DAQ system. architecture behavior DAQPATH firmware that collects merges Front-End data manages their transmission system over output here described. • Data, trigger, electronics for HEP experiment. High speed communication. HDL design.