DM648 not connecting on 100Mbps

Dear all,
I am working on TMS320DM648 having two gigabit PHY's (EMAC).Right now I could connect my board with PC on both the links i.e 100Mbps and 1Gbps, the problem occurs when I try to connect two boards(DM648)back to back on 100Mbps. I am unable to figure out this disconnectivity on 100Mbps when they work perfectly well (back to back) on 1Gbps. As this is a requirement of my project so I have to do it for which I need ur professional suggession.

Thanks and Best Regards
Ahmed

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Hi, there.

I think DM648 can only connect to one port at a time, although it has two EMACs. Ethier of the ports can be 100Mbps or 1000Mbps, but you can not use them at the same time. Maybe you should review datasheet to make sure.

Hope it helps.

2011-09-27

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