CPRI MegaCore Function Fails Timing in Arria V GX Devices at Line Rates Above 3072 Mbps

CPRI MegaCore function variations with CPRI line rate above 3072 Mbps that target an Arria® V GX device cannot achieve timing closure.

This issue affects all CPRI MegaCore function variations with CPRI line rate above 3072 Mbps that target an Arria® V GX device. The affected variations cannot achieve timing closure.

This issue has no workaround.

This issue is partially fixed with the introduction in version 12.0 of the CPRI MegaCore function of a configuration parameter to specify the mapping mode for your variation. To track the variations for which this issue is still relevant, refer to the following errata:

• CPRI IP Core Variations Configured with the All Mapping Mode Might Not Achieve Timing Closure
• Some CPRI IP Core Variations Configured with the Advanced 1 Mapping Mode Might Not Achieve Timing Closure