Why does the Resource Usage Summary in the Quartus® II Fitter report show 0% for CRC Block usage, even if I have the CRC_ERROR function enabled? - Why does the Resource Usage Summary in the Quartus® II Fitter report show 0% for CRC Block usage, even if I have the CRC_ERROR function enabled? Description The Resource Usage Summary in the Quartus® II Fitter report is expected to show 0% for CRC Block usage if the CRC Error Detection block is not feeding user logic. Resolution For more information on using user logic to detect a user mode CRC error, see AN 539: Test Methodology of Error Detection and Recovery using CRC in Altera FPGA Devices (PDF) . Custom Fields values: ['novalue'] Troubleshooting 0000 False ['novalue'] ['novalue'] novalue novalue ['Arria® II FPGAs', 'Arria® V FPGAs and SoCs', 'Cyclone® V FPGAs and SoCs', 'Stratix® III FPGAs', 'Stratix® IV FPGAs', 'Stratix® V FPGAs'] ['novalue'] ['novalue'] ['novalue']