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Altera_Forum
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15 years ago

Source of errors in data from SGDMA

Hello, Sorry to be back so quick but I have spent the last two days on this and am at a loss. I have an SGDMA which is reading 16 bit data from an 8bit SDRAM and streaming this to a vide...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

I agree it is strange that the values on m_read and out_data are different. Could you also show the readdatavalid signal on the m_read interface?

Is it the stream FIFO from SOPC builder that you are using? I thought that ready and valid needed to be active at the same time for an actual transfer to take place.