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

WLin30
Beginner
276 Views

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.

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6 Replies
AdzimZM_Intel
Employee
262 Views

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
Beginner
242 Views

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

WLin30
Beginner
238 Views

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

AdzimZM_Intel
Employee
217 Views

Hi Sir,


You can set your EMIF's parameter according to your memory spec and datasheet.


For the OCT/ODT, you are encourage to perform on board simulation to get the optimal value.


As I stated in my previous comment, you can always refer to the Cyclone 10 EMIF User Guide to setup your EMIF's parameter.


Thanks.


AdzimZM_Intel
Employee
202 Views

Hi Sir,


Do you have any question regarding to this topic?


Thanks,

Adzim


AdzimZM_Intel
Employee
166 Views

Hi WLin30,


I hope you are doing well.


I have to close the case since you don't have further question for this case.


You can always file a new case if you get the problem or issue in using the Intel product.


Thank you for using Intel Community.


Regards,

Adzim


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