Cannot Simulate Auto-Rate Negotiation for Some Line Rates in CPRI IP Core VHDL Models that Target Arria II GZ and Stratix IV GX Devices

Description

If you generate a VHDL simulation model for your CPRI MegaCore function that targets an Arria II GZ or Stratix IV GX device, you cannot use it to simulate auto-rate negotiation between the two CPRI line rates of 614.4 Mbps and 1228.8 Mbps.

This issue affects all CPRI MegaCore function VHDL simulation models with auto-rate negotiation enabled that target an Arria II GZ or Stratix IV GX device.

This issue affects simulation only.

Resolution

This issue has no workaround. To simulate auto-rate negotiation between the two CPRI line rates of 614.4 Mbps and 1228.8 Mbps, generate and simulate a Verilog HDL simulation model.

This issue is fixed in version 11.1 of the CPRI MegaCore function.