Why do I get CRC errors in my Cyclone V device after configuration is complete? - Why do I get CRC errors in my Cyclone V device after configuration is complete? Description Due to a known Quartus® II software issue in version 12.1sp1, incorrect settings are causing CRC errors to be seen after configuration in Cyclone® V devices. This affects the following device densities: 5CEA5 5CGXC4 5CGXC5 5CGTD5 This will cause the device to function improperly in user mode. One characteristic is a stuck bit either at 1 or 0 in affected designs. To determine if you are affected by this, probe the CRC_error pin or use the soft CRC_error IP, refer to AN539 Test Methodology of Error Detection and Recovery using CRC in Altera FPGA Devices (PDF) on how to implement soft CRC_error IP. Resolution Update your Quartus II software to version 13.0 for any Cyclone V designs targeting the affected devices. Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['FPGA Dev Tools Quartus II Software'] 13.0 12.1.1 ['Cyclone® V E FPGA', 'Cyclone® V GT FPGA', 'Cyclone® V GX FPGA'] ['novalue'] ['novalue'] ['novalue']