Study of a Triggered, Full Event Zero-Suppressed Front-End Readout Chain operating up to 1\,MHz Trigger Rate and Pileup of 300 for CMS Outer Tracker upgrade at HL-LHC

The CMS Outer Tracker at HL-LHC will have to cope with pileup of 300\,events per bunch crossing and a trigger rate of up to 1\,MHz. The front-end electronics readout chain consists of readout ASICs connected to a data concentrator ASIC featuring zero-suppression. This contribution presents the methodology and the analysis work for the buffer sizing and exception handling featuring a robust data readout synchronization, with an event loss probability lower than~0.1\,\% at the highest pileup condition and a power density lower than 100\,$\mathrm{mW/cm^2}$.