Article ID: 000081154 Content Type: Troubleshooting Last Reviewed: 08/14/2023

Why does the UniPHY CORDROP_ERROR register show a non-zero value?

Environment

    Quartus® II Software
    DDR3 SDRAM Controller with UniPHY Intel® FPGA IP
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Description

Why does the UniPHY CORDROP_ERROR register show a non-zero value?

Resolution

When you have ECC enabled with Auto Correction in your DDR3 UniPHY memory controller, you may see that the UniPHY Auto Correction Drop (CORDROP_ERROR) register contains a non-zero value. This register will increment when the error address FIFO in the controller is full, and the controller cannot schedule an auto-correction command.

Related Products

This article applies to 5 products

Arria® V GT FPGA
Arria® V GZ FPGA
Arria® V ST SoC FPGA
Arria® V SX SoC FPGA
Arria® V GX FPGA

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