Description
Due to a problem in the Quartus® II software versions 14.0 to 15.0, you may see an incorrect rx_parallel_data[63:0] parallel data output on a Stratix® V GT receiver. The rx_parallel_data[127:64] will be correct.
Resolution
To work around this problem, you can install Quartus II software version 15.0, then download and install the patch below
This problem will be fixed in a future version of the Quartus II software.