Article ID: 000077634 Content Type: Troubleshooting Last Reviewed: 09/11/2012

What are controller-scheduled autocorrections?

Environment

  • Quartus® II Subscription Edition
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    Description

    In the DDR3 UniPHY version 11.0 memory controller, the controller scheduled autocorrections are read/write transactions that take place after a single bit error is detected and autocorrection is enabled. The controller must write back the corrected data to memory.

    The controller performs a read-modify-write (RMW) transaction during an autocorrection. The reason a RMW is performed instead of a write is because there might be another write to the same location before autocorrection occurs. The controller needs to make sure it is correcting the latest data in the memory.

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    This article applies to 1 products

    Stratix® IV GX FPGA