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Altera_Forum
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14 years ago

simultaneous access to ddrII memory by nios and vhdl entity

Hi all, I am using Arria II device.Basicly,what i need to do is to transfer large amounts of bulk data,which is stored in DDR2 memory using Ethernet to PC.The problem is that vhdl-based entity is ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

If your VHDL module just provides a stream of data then you could use a DMA that pulls that data in and places it into the memory. That would just require you expose a simple streaming interface to your VHDL module which may be easier than building the master logic. Nios could then monitor the DMA to find out when it's done and safe to access the contents in the memory.