A CDR locked signal might not be stable when using serial loopback mode when simulating a Custom PHY IP for Stratix V - A CDR locked signal might not be stable when using serial loopback mode when simulating a Custom PHY IP for Stratix V Description When you simulate a Custom PHY IP, a CDR locked signal might not be stable when using serial loopback mode. Resolution Disable serial loopback mode and use an external serial loopback in the testbench. Custom Fields values: ['novalue'] Troubleshooting novalue True ['Simulation'] ['FPGA Dev Tools Quartus II Software'] novalue 10.0.1 ['Stratix® V FPGAs'] ['novalue'] ['novalue'] ['novalue'] - 2021-08-25

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