MDIO/MDC

Hi everybody,

I have great problems to put TINIds80C400 together with
a MARVELL 80E6063 ethernet switch via MDIO/MDC.

To read/write some register's works only a little when inverting the
MDC clock.
But results read from the marvell seems to be wrong value, for
example: reading Phy control register returns always a set bit a position 0,
but
Marvell dokumentation says: Bit at this position  "will always be 0 (zero)".

Writing some valid commands to Phy control register results only in
disconnecting the phy then come up again but always phy is set in mode
10 Mbit half duplex (!?!??).

Has anybody experience putting these chip's together?
Please let me know!

Thanks in forward!

Klaus



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