Site Search

Please tell me how to calculate MaxACb and MinCKb in the formula for Maximum skew within address and command bus in the setting items of the Board Settings tab of DDRx SDRAM Controller with UniPHY.

IP

Category: External memory interface
Tools: Quartus® II
device:-


b is the board number.
Do the calculations on each board and take the maximum of the results.
MaxACb should be the maximum delay for Address/Command signals on board b and MinCKb should be the minimum delay for CK on board b

Refer to the document below for the calculation formula.
https://www.altera.com/en_US/pdfs/literature/hb/external-memory/emi.pdf
(Search for Average delay difference between address and command and CK.)



Experienced FAE
Free consultation is available.

From specific product specifications to parts selection, the Company FAE will answer your technical concerns free of charge. Please feel free to contact us.