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DP83867E, Link two PHY's without an MAC for an Converter? 1000Base-T, Ethernet

Matthias Hagn
Prodigy 20 points
Other Parts Discussed in Thread: DP83867E

Hello,

I just working on my bachelor work and I'm having to design and build an converter.

On one side there is the "Gigabit Ethernet PHY" (DP83867E)  from TexasInstruments to provide the RJ45-Ethernet. This chip supports the RGMII-Interface. On the other side there is pretty the same chip, but provides a another kind of ethernet.

Now, both chips are Ethernet "PHY"s like its called and both support the RGMII interface. I have to build an converter between this two kinds of ethernet.

Now my question:
Is it possible to link these two chips from TI over the RGMII-Interface and "ready" is the Converter?
->Can I link two PHYs? Or must there a MAC in the middle, which easly pass the messages threw? When yes, what chip do you advise?

Thanks a lot for answering my question!