Abstract
A hybrid readout system is being developed for installation in one module of the ATLAS scintillating Tile Calorimeter (TileCal) during the long LHC shutdown in 2013/2014. The hybrid combines a fully functional demonstrator of the full-digital system planned for installation in 2022 with circuitry to maintain compatibility with the existing system. This is the report on a second generation prototype link and controller board connecting the on- and off-detector electronics. The main logic component within this board is a XILINX Kintex-7 FPGA connected to an 12 ×5 Gbps SNAP12 opto transmitter and a 4 ×10 Gbps QSFP+ connector, for off-detector communication. One of the latter two will be chosen for the final design.