New Contributor
New ContributorHi, Adzim,
I still have some problems with all memories, but it went better. What did I do:
- in dqs pins from 39 to 0 I set memory groups in this order: lower and upper A (device 3), upper and lower B (device 2), and lower C. (device 1) (why did I set upper and then lower A - in other case, I have only 3/5 dqs group calibrated)
- in IP parameters: MemIO tab -> memory IO settings subtab -> Output drive strength setting - 40 ohm and ODT Rtt nominal value - 48 Ohm
Now, I have these calibration results:
+---------------------------------------+
; Calibration Status Per Group ;
+-------+--------+----------------------+
; Group ; Status ; Error Stage ;
+-------+--------+----------------------+
; 0 ; Pass ; N/A ;
; 1 ; Pass ; N/A ;
; 2 ; Pass ; N/A ;
; 3 ; Pass ; N/A ;
; 4 ; Fail ; Write Per-bit Deskew ;
+-------+--------+----------------------+
So, now I can work with 32bit memory without ECC, but it still not what I expected. Moreover, we are going to make board for other project with at least 64bit wide memory interface, so I still need to solve this problem. I attach report and configuration for current project
