Stratix® V Device Handbook: Volume 1: Device Interfaces and Integration

ID 683665
Date 10/18/2023
Document Table of Contents

2.11.1. Error Correction Code Truth Table

Table 14.  ECC Status Flags Truth Table

e (error)


ue (uncorrectable error)


0 0 No error.
0 1 Illegal.
1 0 A correctable error occurred and the error has been corrected at the outputs; however, the memory array has not been updated.
1 1 An uncorrectable error occurred and uncorrectable data appears at the outputs.

If you engage ECC:

  • You cannot use the byte enable feature.
  • Read-during-write old data mode is not supported.
Figure 23. ECC Block Diagram for M20K Memory