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Altera_Forum
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12 years ago

Tightly Coupled OnChip DMA

Hi, I've got some very strange 'performance behavior' with a tightly coupled on chip memory used as data storage. In order to speed up my design, I've created a tightly coupled on chip memory w...
Altera_Forum's avatar
Altera_Forum
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12 years ago

I have a similar situation with simple DMA and internal FPGA memory ... is that the same as TCM ?

Can you explain the mechanism that stalls the NIOS processor while the DMA is in operation ? I would have thought that the Avalon MM fabric would take

care of that arbitration and both would make forward progress together .

Thanks, Bob