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Altera_Forum's avatar
Altera_Forum
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19 years ago

SDRAM clock?

Dear everyony, I use 50M main clock in my nios2 system, but I want to use 100M clock to my SDRAM ,which is 16 bit interface, to enhance the SDRAM performance! Is it ok? and ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
19 years ago

Just a note about clock-domain crossing.. first, it adds a lot of logic to your design, and therefore compile time. If you can afford this, then you should note that clocking your RAM higher than your CPU will only yield marginal results - not linear. Using burst-capable components, such as RAM cores, (I don't even think SDRAM bursts that well - DDR is a bit better) may not take advantage of the higher clock speed.