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66AK2H12AAAW2 NAND Flash

Dan LaChance
Expert 1770 points

Hello TI,

I have a question about the maximum amount of NAND flash the Keystone can address.

I see the document about the EMIF and that describes some of the registers for ECC.  I don’t see anything about block size supported or sector size.  Can you get some guidance on where to look?

Thanks,

Dan

  • 0
    TI__Mastermind 42545 points

    Hi Dan,

    Since the addressing of NAND memory doesn't use the address lines, there isn't a limit to the size of the part that can be used. The addressing is handled by the software driver that you develop. ECC is a different question. The hardware ECC accelerator inside the part is limited 1bit ECC for 512 bytes or 4bit ECC for  518 bytes. This is compatible with the requirements for many of the smaller capacity NAND flash parts but is not sufficient for some of the larger capacity parts. These parts can still be used in your design but you will have to do the ECC calculation in software instead of using the hardware accelerator in the EMIF16. This is discussed in the EMIF16 users guide.

    Regards, Bill