The following simulation parameters in the Low Latency 40- and 100-Gbps Ethernet MAC and PHY MegaCore® function test bench file are not explained in the user guide. Please refer to the following definitions:
SYNOPT_FULL_SKEW - Support full skew tolerance according to IEEE spec. In the example testbench this is turned off to speed up the initialization time
RST_CNTR - controls the reset delays for the PMA reset process. It's set to 6 in simulation to speed up initialization. Ignore this parameter for synthesis and leave at the default value.
CREATE_TX_SKEW - Lane to lane skew in simulation.
Its important that user should not modify these parameters, otherwise simulation could fail. These parameters are subject to removal in future Quartus® II releases.