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yianchr11's avatar
yianchr11
Icon for New Contributor rankNew Contributor
2 years ago

Arria V DDR3 EMIF toolkit "Unable to establish a connection..."

Hello, I have been trying to debug a DDR3 memory connected to an Arria V 5AGXMA3D4F27I3 device with Quartus prime standard 18.1.0, 18.1.1, 21.1.2 with no success. Using the "DDR3 SDRAM Controller wi...
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AdzimZM_Altera's avatar
AdzimZM_Altera
Icon for Regular Contributor rankRegular Contributor
2 years ago

Hello Yiannis,


Thank you for your feedback.


Yes your understanding is correct. Usually the on-chip debug port option is not need to run the EMIF Debug Toolkit.

If you're not using on-chip debug port option, the calibration status is success?

I think the calibration status can be identified with local_cal_success and local_cal_fail signals.


Usually we will make sure:

  • The device is identical to the board
  • Pin constraint is matched to the board
  • Hardware connection is correct


Sometimes the JTAG frequency can cause the issue as well.

You may try to reduce the JTAG frequency as low as possible.


If you disable the debugging option, do you see the calibration issue as well?


Regards,

Adzim