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Altera_Forum's avatar
Altera_Forum
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14 years ago

Running Nios II on DDR2 (UNIPHY controller)

Hello all, I'm trying to run the "Small Hello World" example in Nios II by using a DDR2 with the UNIPHY controller both for data and instructions. I'm using a custom preset I've made for a Winb...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

I would go the other way:

connect external 50MHz clock to DDR2 memory controller. The controller gives outputs of 100MHz and 50MHz clocks. Choose one of them and use it for the whole SOPC system. This means that the external clock is connected only to memory controller and all the other components (including cpu itself) is connected to the memory controller clock output. No need of clock crossing bridge then.