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AM572x: Confirm the EMIF termination

Kaka
Guru 24520 points


Hi TI Experts,

I got some questions from my customer. Please let me confirm them.

[Question.1]
Would you please show us the kinds of leveling which AM572x supports? Does AM572x support the ODT function?
[Question.2]
Would you please show the recommended Termination resistor between AM572x and DDR3?

If you have any questions, please let me know.
Best regards.
Kaka

  • 0
    TI__Guru*** 125430 points

    Kaka said:
    Would you please show us the kinds of leveling which AM572x supports?

    Hardware leveling.

    Kaka said:
    Does AM572x support the ODT function?

    Yes, for the data pins.  External VTT termination is ordinarily used for address/control pins.

    Kaka said:
    Would you please show the recommended Termination resistor between AM572x and DDR3?

    Are you referring to the fact that the SR2.0 data manual has little to no info in the EMIF section?  I just sent an email to the factory team requesting they comment.

  • 0 in reply to Brad Griffis
    Guru 24520 points
    Hi Brad,

    Thank you for your comments.
    I have a question for leveling. According to the TRM on page 3211, there is description about DDR Dynamic ODT register. And it is said that NOT SUPPORTED. What does this mean?

    Yes , I also noticed that the TRM and TI wiki site have not enough information for EMIF like following wiki site.
    processors.wiki.ti.com/.../AM335x_EMIF_Configuration_tips

    If you have any feedback form factory team, please let me know.
    Best regards.
    Kaka