[En-Nut-Discussion] Full Duplex operation

[Stephen Noftall]

Hello everyone; I asked this question before, a few years ago, but 
couldn't figure it out. Apparently, Ethernut seems to always want to 
come up in half-duplex when connected to an auto-negotiating switch. I 
have tried to make it come up in full duplex, but with no luck.

I have been able to make it use full duplex when I hook it into a 
managed switch, and manually setting it to full duplex for that port. It 
then uses full duplex without a problem.

The reason I am asking this is we have ran into a problem with packets 
being dropped, and the connection going dead for >2 seconds when there 
is allot of traffic. Switching it from half to full duplex corrects this 
problem.

I have been thinking that it can be changed by hooking up to the EEPROM 
lines, and then reprogramming the EEPROM. But the EEPROM is already set 
to full duplex. My only guess is that the auto-negotiating aspect of the 
8019AS is broken.

Has anyone else been able to get full duplex to work?

Cheers

Stephen Noftall