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Altera_Forum's avatar
Altera_Forum
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12 years ago

External memory access for beginner

Hello guys, I've been learning to use external memory interface. I want to read some data from DDR2 SDRAM (assume data is there already), store them in on-chip RAM and do some calculation, then...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

Thanks Ted!

I shall start with getting familiar with qsys.

In a tutorial about DDR3 SDRAM controller with UniPHY using qsys, I see a DMA controller is added in the qsys hierarchy. I'm not clear about this, since from other documents I see that external memory controller can be directly connected to other qsys components through avalon MM bus, then what is DMA controller for here?