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Altera_Forum
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15 years ago

Question : Avalon OpenCores 10/100 Ethernet MAC TX problem

Hi All, I am experiencing strange behaviour with the transmit side of the OCM version 9.1, I have created a sof for a Cyclone II custom board that includes a Nios II/f, 16MB SDRAM (32bit datab...
Altera_Forum's avatar
Altera_Forum
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15 years ago

Thanks guys...

dsl, I also had my suspicions re alignment.. I tried doing exactly what you suggested. Unfortunately, this resulted in the same behaviour.

cris72, there's no negative slack in the TQ report. You are right, it's a 25MHz osc. Not sure about the phy clocking though.. I'm having it checked out by someone else (hardware engineer).

(Un)fortunately I'm on holiday as of 5pm today so will be resuming investigation in a weeks time. I'll keep you posted on any significant observations and progress.

Thanks

Ade