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Altera_Forum's avatar
Altera_Forum
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13 years ago

onchip memory timing constraints

Hi guys! I am capturing 1Mbit of 64 bit words at 100MHz with onchip memory on my DE2-115 board. All data is produced on the chip. How do I need to add timing constraints? Do I need to set...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

Have you tried generating 128bpw memory blocks with the Wizard, then paralleling them to achieve a wider port?

What do you mean with data "doesn't get saved properly": not saved at all? a few wrong bits? random saved data?

You should also consider the problem can be due to the memory interface. Where does data come from? How do you perform writes? It could also be timing related, but I dare say a "functional" timing issue.