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Altera_Forum's avatar
Altera_Forum
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19 years ago

Access to external RAM

I have a system that appears to work at a system clock of 70 MHz but fails to work at 85 MHz. @85MHz, when we run the firmware it behaves in a very strange manner. Often it will get to a specific poi...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

With the higher clock speed, would you need to change the phase of the clk to the RAM? You could be violating s&h times, perhaps you should shift the phase of the clock +45' relative to the nios2 clk and see what happens.