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

Hello, mr. Adzim!
I have tested each device individually (only one device was connected to the project). Calibration was successful in this case. This issue happens when I try to use 3 devices all together. And what about your checklist:
1. EMIF Debug Toolkit is enabled
2. How can I enable address mirroring option? (I use Quartus Prime Pro 20.2.0)
3. And how can I make reset to be held about 200ms after initialization?

And here is calibration status:

; Calibration Status Per Group ;
+-------+--------+----------------------+
; Group ; Status ; Error Stage ;
+-------+--------+----------------------+
; 0 ; Pass ; N/A ;
; 1 ; Pass ; N/A ;
; 2 ; Fail ; Read Per-bit Deskew ;
; 3 ; Fail ; Write Per-bit Deskew ;
; 4 ; Fail ; Write Per-bit Deskew ;