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


n is the memory clock number.
If you have multiple clocks, apply the routing delay for each.
If you have one clock output but multiple memory devices with different wire lengths, treat it as multiple clocks and apply the wire delays for each to get an average result.

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.)