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AM3352: Validating a new DDR

Sara Johnson
Prodigy 10 points
Part Number: AM3352

Tool/software:

I would like to replace the DDR component D2516ECMDXGJDI-U with the JSR364G168NHR-L.. Both appear to follow JEDEC standards and seem pin-to-pin compatible, but I’d appreciate any insight TI may have on this potential swap — particularly on the software validation front.

Would you be able to recommend:

  • Any specific software-level stress tests (including edge cases) we should run?

  • Known compatibility flags or errata to be aware of for DDR3L with this processor?

  • Any TI documentation or application notes that cover DDR validation practices or tools?

  • Would this part require new ODT settings?

I want to make sure we perform a thorough validation from both a hardware and firmware perspective.

Thank you, I appreciate your advice.

  • 0
    TI__Guru* 86180 points

    Hi Sara, for software level tests, i would recommend linux memtester (I'm assuming you are using linux OS in your system) across the full operating temperature you expect to operate.  Performing long term tests (overnight or couple of days) at min/max temp across several boards.  Also, booting at min temp and then ramp temp to max and run memtester (and vice versa) will also help stress test the marginality of the configuration.

    There aren't any errata associated with DDR3L that would affect your operation.  You may have to adjust the drive strength or ODT settings because of the new device, hard to tell from just the device itself.  I think with the relatively low max frequency for AM335x and DDR3L, you should have a lot of margin to work with.  

    Regards,

    James

  • 0 in reply to JJD
    Prodigy 10 points

     I will definitely be looking into memtester. Thank you for these suggestions!

  • 0 in reply to Sara Johnson
    TI__Guru* 86180 points

    great!  i will close the thread