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?

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.

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.