Why are all nodes ending with *sync*/*s0* incorrectly set to set_false_path in my project when using the CPRI MegaCore Function? - Why are all nodes ending with *sync*/*s0* incorrectly set to set_false_path in my project when using the CPRI MegaCore Function? Description Starting from Quartus® II software version 12.0, when you generate a Common Public Radio Interface(CPRI) IP in your design, an “altera_cpri.sdc” file is generated automatically. It contains the set_false_path constraints as below: set_false_path -from * -to *sync set_false_path -from * -to *sync[*] set_false_path -from * -to *sync1 set_false_path -from * -to *sync1[*] set_false_path -from * -to *s0 set_false_path -from * -to *s0[*] As is without modification, all equivalent destination names in your project will be specified with set_false_path incorrectly. Resolution To ensure the SDC constraints are only applied on the CPRI related instances, you must modify the Synopsys Design Constraint ( .sdc ) file manually by inserting the CPRI instance name used in your project. For example: set_false_path -from * -to * <your instance name> *sync set_false_path -from * -to * <your instance name> *sync[*] set_false_path -from * -to * <your instance name> *sync1 For further details regarding this issue, please refer to " Appendex F.Integrating the CPRI IP Core Timing Constraints in the Full Design " in CPRI MegaCore Function User Guide Custom Fields values: ['novalue'] Troubleshooting novalue False ['Interfaces Communications CPRI (Primary)'] ['FPGA Dev Tools Quartus II Software'] novalue 12.0.2 ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']