Development of the Compact Processing Module for the ATLAS Tile Calorimeter Phase-II Upgrade

The Phase II Upgrade of TileCal implies a new readout architecture with a full-digital trigger system in order to cope with the HL-LHC requirements. The on-detector readout electronics will transmit digitized data to 32 Tile PreProcessor boards in the counting rooms at the LHC frequency, transmitting selected data to the FELIX system and interfacing with the trigger systems. Each TilePPr module is composed of 4 Compact Processing Modules with single-width AMC form factor and one full-size ATCA carrier with 4 slots. This contribution presents the design of the first CPM prototypes, and reviews the design of the TilePPr Demonstrator for the TileCal Demonstrator programme.