PC Processors

[tojuni]

Hi,

I 've made DDR4 DIMM control board using versal. but I've noticed that 240ohm reference resistor at IO_VR_700 pin is missed.

There is no way to add 240ohm resistor on the PCB, becacuse I did not make any trace or TP at IO_VR_700 pin.

Now, during DRAM initialization, it is stopped in calibration failed state.

Is there any other way to solve it in DRAM MIG?

Thanks,