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Altera_Forum
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13 years ago

Simple DMA Controller Mystery

I have implemented a qsys design with pcie_hard_ip, Altera's DMA controller and my custom Avalon component as a slave to the DMA controller. For testing, my custom component presents a constant 32-bi...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

FIXED (maybe) - I got correct DMA transfers when I selected only the 32-bit transfer support checkbox in the Qsys DMA controller GUI. The docs imply that you can check all the transfer size option boxes and that the size used by your slave (in my case 32 bits) will be the one used. Could be my 'fix' is in reality a work-around for some other lurking oversight...