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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
Icon for Honored Contributor rankHonored Contributor
13 years ago

I have a 32-bit data path between SGDMA and on-chip memories. With burst count signal width of 4, I was getting a throughput of around 380MB/s. All components in my system are running at 100MHz. Hoping to increase it further, I have increased the burst count signal width to 16 and my throughput dropped to 200 MB/s.

Can burst count signal width have a negative impact on throughput?