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Hello,
I am using two stratix II signal integrity development kits, and try to communicate between them using the ALTGX megacore. I am using it in 16-bit width.
I am experiencing a problem with the order of the bytes - I send two words, i.e. "AABB", "CCDD" but the receiver side receives "DDAA", CCBB" or something similar.
What could be the problem?
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A wild shot in the dark but maybe you don't have a word reversal problem but a word alignment problem or a bit order problem. Try sending methodical test cases like "96" followed by "D1". If you have a byte order reversal you will get "69" then "1D". If you have a bit order reversal you will get "69" then "8B".
I might be off in my explanation but you get the idea... You have to isolate the problem before you can solve it. It might be as simple as a bit order issue.
David
Honored Contributor
