Programmable Devices
CPLDs, FPGAs, SoC FPGAs, Configuration, and Transceivers
20867 Discussions

Cyclone 10 GX EMIF with Multiple Drivers

DM38
Novice
421 Views

Hi,

 

I am converting a design that previously used the MPFE to one that uses the EMIF on the Cyclone 10 GX. The MPFE allowed for multiple modules to be connected to the external memory and handled all of the arbitration.

It appears that the EMIF does not have the same arbitration feature. it is my understanding that the EMIF uses the Avalon-MM interface. I have run across documentation that states:

"When multiple masters contend for access to a slave, Platform Designer automatically inserts arbitration logic, which grants access in fairness-based, round-robin order. You can alternatively choose to designate a slave as a fixed priority arbitration slave, and then manually assign priorities in the Platform Designer GUI."

If I create Avalon-MM masters, will they allow the custom modules to communicate with the EMIF via an arbiter? Are there any example designs of what I am trying to accomplish? Will I need to create a custom arbiter to handle these transactions?

 

Thank you for your time and consideration.

 

 
Labels (2)
0 Kudos
2 Replies
AdzimZM_Intel
Employee
357 Views

Hi,


The arbitration logic in the statement means the Quartus will automatically added the arbitration logic into the design if there is multiple master connection to a slave.

It's not an additional module but it's a logic that you can view in the Platform Designer. I think it's in Interconnect section that you can configure the priorities.


So you don't have to create an arbiter to handle the transaction. Quartus can identify it and add the logic in the design.


Please let me know if you have any further question regarding this issue.


Thanks.

Regards,

Adzim


0 Kudos
AdzimZM_Intel
Employee
323 Views

As we do not receive any response from you on the previous reply that we have provided, I now transition this thread to community support. Please login to ‘https://supporttickets.intel.com’, view details of the desire request, and post a feed/response within the next 15 days to allow me to continue to support you. After 15 days, this thread will be transitioned to community support. The community users will be able to help you on your follow-up questions.


0 Kudos
Reply