Does the MDIO interface on BF518 can be configured as slave device? Thanks!
MDIO is MII management channel. It is always from MAC controller to Ethernet PHY. It can not be used as a slave to accept incoming clock and commands. SPI is similar to MDIO and can work as a slave.
Can the SPI emulate the MDIO slave protocol?
Might be Ok. But SPI Slave Select signal need extra logic.
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