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Altera_Forum's avatar
Altera_Forum
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20 years ago

OpenCores 10/100 EMAC problems

Hi all, I want to use the OpenCores 10/100 Ethernet MAC core in a NIOS I (v3.2) design on the Microtronix uKit. I use the SOPC builder version of that core what is published by MaCo Engineering...
Altera_Forum's avatar
Altera_Forum
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20 years ago

...it's me again.

I figured out, that if a packet is lost the MAC reports a TX ERROR.

I also increased the clock rate from 66MHz to 75MHz and the point where it becomes worse shifts from 300Btyes to 1100Bytes in ICMP packet length.

So I agree that it could be a problem of a to slow running system clock.

I will try to setup the system clock to 100MHz - maybe this will solve to problem.

regards, Marco.