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Altera_Forum's avatar
Altera_Forum
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14 years ago

SGDMA data transfer question.

Hi, I did a memory transfer test from RAM to SDRAM using SGDMA, the speed test was evaluated using performance counter core, and it shows the transfer rate goes up to 370 MB/s with all con...
Altera_Forum's avatar
Altera_Forum
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14 years ago

By random he means jumping around in the address space of the SRAM. So SDRAMs are good for sequential bursting type of traffic (high throughput) and SRAM is good for low latency random accesses. SSRAMs are somewhere in between by handling reasonably high throughput and low latency random accesses.

With a long sequential DMA transfer you should be able to hit 400MB/s at 100MHz on a 32-bit local interface.