Versatile firmware for the Common Readout Unit (CRU) of the ALICE experiment at the LHC

As from the run 3 of CERN LHC scheduled in 2022, upgraded ALICE experiment will use a Common Readout Unit (CRU) at heart data acquisition system. The CRU, based on PCIe40 hardware designed for LHCb, is common interface between main sub-systems: front-end, computing system, and trigger timing 475 CRUs 10 different sub-detectors reduce total throughput 3.5 TB/s to 635 GB/s. firmware framework supports taking continuous triggered mode forwards clock, slow control front-end electronics. In this paper, architecture data-flow performance are presented.