External Memory Interfaces Intel® Agilex™ FPGA IP User Guide

ID 683216
Date 6/20/2022

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Document Table of Contents Debugging Write Leveling Failure

  1. Check the pin assignments for address and command pins. If the FPGA cannot write to the memory device correctly, the FPGA cannot get the correct data for comparison.
  2. Compare the calibrated setting and margin for DQS enable for the failing group with other passing groups. If the DQS enable is not calibrated correctly, the FPGA cannot get correct data from the memory device.
  3. Ensure the parameter editor specifies correct memory timing parameter, CAS, and Write CAS latency parameters. Incorrect parameter values can cause data corruption in the memory device.