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Altera_Forum
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11 years ago

Modular SGDMA - Streaming to Memory Mapped Random first write.

Hi, I am using the Modular SGDMA to write memory into DDR3 memory, and then a second one to read it back out again. The reading is all working fine and writing into the memory works as well, ex...
Altera_Forum's avatar
Altera_Forum
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11 years ago

I've also noticed from the signalTap traces, that for some reason, each time I write a 32bit symbol to the descriptor (with the correct byte enables set to 0), the other bytes in the descriptor get overwritten with 0xFFFFFFFF, even though the byteenables shouldn't allow that to happen. As a result the descriptor is getting corrupted by the time it leaves the dispatcher.

Any suggestions why this would be happening?