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Altera_Forum
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14 years ago

PCIe Payload Length

Hi According to the PCIe spec, the TLP payload is 4kbytes. PCIe provided by Altera have some different types of specs which range from 128bytes to 4kbytes. I have tried to use Jungo dri...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

To do long PCIe transfers you have to use a dma controller that is linked with the PCIe master - nothing else can actually tell the PCIe block to generate a longer TLP.

As you may have noticed PCIe isn't 'express' in any sense unless you are using long TLP.