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WLin30's avatar
WLin30
Icon for New Contributor rankNew Contributor
5 years ago

Does the ddr3 descrete components' command & address signals need termination resistors for c10?

I have design a board c5+descrete ddr3 component which command & address signals do not have termination resistors which run ok. I am not sure wheter C10 also ok for such design.
AdzimZM_Altera's avatar
AdzimZM_Altera
Icon for Regular Contributor rankRegular Contributor
5 years ago

Hi,


The DDR3 discrete components' command & address signals are required the termination resistor.

In Cyclone 10, you can use the internal termination scheme such as on-chip termination (OCT) and on-die termination (ODT) instead of external termination resistor.


You can always refer to Cyclone 10 EMIF User Guide in the link below.

https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/ug/ug-20116.pdf


May I know whether you setup the OCT and ODT on your design Cyclone V with DDR3?


Thanks.



  • WLin30's avatar
    WLin30
    Icon for New Contributor rankNew Contributor
    5 years ago

    Do you mean that by setting Cyclone10's OCT/ODT that need not external termination resistor?

    • WLin30's avatar
      WLin30
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      5 years ago

      If yes, how to set the EMIF's parameters?