Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

InterNiche driver with Marvel 88E1111

good day. [recapitulation from other thread] i am using the cyclone iii development board (ef3c120f7807cn) the samples included in the dev kit does not include any ethernet. therefore...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

I don't think it's software related. I rather think that something triggers the receive SGDMA...

Can you check again the MII connection from the MAC to the external PHY, and the connection between the MAC and the RX SGDMA? Check also that the IRQs are set up correctly for the driver.

You could also use Signaltap probes on the MII interface (receive part), and on the Avalon Stream between the MAC and the RX DMA, to check if anything unusual is happening there. Obviously when you remove the cable you shouldn't see any traffic there.