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Andrey_Fazan's avatar
Andrey_Fazan
Icon for New Contributor rankNew Contributor
4 years ago

calibration of ddr4 interface on 10AX066H4F34E3SG

Hello! I'm trying to implement DDR4 40bit-wide interface with 3 devices MT40A512M16LY-062E. When I connect only one of 3 devices to the project, calibration and data exchange do well, but when I conn...
AdzimZM_Altera's avatar
AdzimZM_Altera
Icon for Regular Contributor rankRegular Contributor
4 years ago

Hi Andrey_Fazan,


Thanks for sharing the report.

Are you also able to attached the calibration report for the one device testing?


From the report, it's can be seen that the calibration is stopped at DQS2.

Can you identify which device that has been used for that group?

Can you check the connection on that device?


Can you confirm that all connections on your design are connected correctly?


Or if possible, can you test it on different board?


Thanks,

Adzim


Andrey_Fazan's avatar
Andrey_Fazan
Icon for New Contributor rankNew Contributor
4 years ago

Hi, Adzim!
I attach reports for each memory device

From these reports, you can see, that every separate device calibrates correctly, so, I suppose, there are connected correctly too.

In archive:

- bank C - the first device (DQS0)

- bank B - the second device (DQS1, DQS2)

- bank A - the third device (DQS3, DQS4)

Such names for devices are just used in our project