DisplayPort Source Designs With Maximum Lane Count 1 Fail Compilation

Description

DisplayPort source designs with maximum lane count set to 1 will fail to compile in the Quartus II software. You will see the following error message:

Error (10251): Verilog HDL error at bitec_dp_tx_skew.v(90): index -1 cannot fall outside the declared range [39:0] for dimension 1 of array "data_sr"

You will only see this error during the Quartus II software compilation. Your design will pass the ModelSim simulator compilation.

Resolution

To avoid compilation error, set the maximum lane count to 2 or 4.

This issue is fixed in version 16.0 of the DisplayPort IP core.