The data will transmitted using optical fibres operating at 4.8 Gbps with 8b/10b encoding. The development of the oSLBs and oRMs is described. New hardware with the latest Xilinx Kintex-7 FPGAs had to be designed and new firmware was developed. No control lines or alignment flags are present in the receiver side (oRMs), therefore special techniques were implemented in order to keep the optical links aligned (e.g. by disabling TX/RX transceiver buffers). A method to remotely reprogram the FPGAs is described. The oRMs are remotely reprogrammed through the optical data stream and the oSLBs are remotely reprogrammed using VME Bus access.
A method to remotely reprogram the FPGAs is described. The remote reprogramming updates the oRMs through the optical data stream, and the oSLBs are also remotely reprogrammed using the VME Bus access.