calibration of ddr4 interface on 10AX066H4F34E3SG

Hi Andrey,

Thanks for sharing those files.

It's seems like the sdram_a[7...0] is the only group that failed in the calibration

Even after you swapping the group with sdram_a[15...8].

The sdram_a[15...8] group can do the calibration but not for the sdram_a[7...0].

There is one thing that I notice in the calibration report which is the VREFIN setting for the sdram_a[7...0] group is slightly lower than other.

Maybe you can take a look on the voltage for this group when running the calibration.

Also make sure that there is no connectivity problem on board.

You can try to set the Memory I/O Settings as below.

 • Output drive strength setting = RZQ/7 (34 ohm)

 • Dynamic ODT (Rtt_ WR) value = Dynamic ODT off.

 • ODT Rtt nominal value = ODT Disable.

 • Rtt Park = RZQ /3 (80 Ohm)

Thanks,

Adzim