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Konrad's avatar
Konrad
Icon for New Contributor rankNew Contributor
5 years ago

Tripple Speed Ethernet (tse) Avalon-ST interface format

I am using the tse in small mac mode for a fixed 100M only connection. The project is in Quartus 16. I am a bit confused as to how the avalon-ST interface works. I have read the avalon-ST user gui...
Deshi_Intel's avatar
Deshi_Intel
Icon for Regular Contributor rankRegular Contributor
5 years ago

HI,


If you are using datawidth = 32 bits then you must use "ff_tx_mod[1:0]" so called empty signal to mask out invalid/extra data transfer in last data packet sent.


Else you can also consider to use datawidth = 8 bits to give you more flexibility in taking care of last data packet transaction issue. Then you will not face the problem anymore.


Thanks.


Regards,

dlim


Konrad's avatar
Konrad
Icon for New Contributor rankNew Contributor
5 years ago

OK, I have re-read the user guide and figured out I can assert Start of Packet (SOP) and End of Packet (EOP) at the same time if the packet is 4 bytes or less.