Why does Quartus® II software version 15.0 and earlier allow an unsupported registered phase compensation FIFO setting for channels 1 and 2 of Arria® V device transceiver banks GXB_L0 and GXB_R0? - Why does Quartus® II software version 15.0 and earlier allow an unsupported registered phase compensation FIFO setting for channels 1 and 2 of Arria® V device transceiver banks GXB_L0 and GXB_R0? Description Due to a problem in the Quartus® II software version 15.0 and earlier, the Quartus® II software fitter allows an unsupported registered phase compensation FIFO setting for channels 1 and 2 of Arria® V device transceiver banks GXB_L0 and GXB_R0. The restriction in the Arria® V device handbook is correct. There is no support for registered phase compensation FIFO mode in channels 1 and 2 of GXB_L0 and GXB_R0. Resolution You should not use the phase compensation FIFO in registered mode for the above channels. This problem has already been fixed in the Intel® Quartus® Standard software version 16.0.1. Custom Fields values: ['novalue'] Troubleshooting 300940 False ['Arria® V Transceiver Native PHY IP'] ['FPGA Dev Tools Quartus II Software'] 16.0.1 15.0 ['Arria® FPGAs', 'Arria® V GX FPGA'] ['novalue'] ['novalue'] ['novalue']