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Altera_Forum
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10 years ago

mSGDMA response FIFO stucks if receives 256...512 bytes

I use Quartus II 64-Bit Version 15.02 Build 153 mSGDMA is used in ST to MM mode http://www.alteraforum.com/forum/attachment.php?attachmentid=11724&stc=1 in the Control register set bits DES...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

Yes, I'm using custom mSGDMA.

Below are screenshots of Signal Tap with 52 bytes, 232 bytes, 256 bytes per packet, zoomed to the end of the packet and the beginning of the next one:

52 bytes per packet

http://www.alteraforum.com/forum/attachment.php?attachmentid=11732&stc=1

232 bytes per packet

http://www.alteraforum.com/forum/attachment.php?attachmentid=11733&stc=1

256 bytes per packet

http://www.alteraforum.com/forum/attachment.php?attachmentid=11735&stc=1

i do not see differences of waveforms