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Hot!KSZ9897A Port 7 Accessible via MDIO/MDC?

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Jopana
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2019/03/25 12:59:57 (permalink)
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KSZ9897A Port 7 Accessible via MDIO/MDC?

I have a microcontroller (with an internal MAC) connected using MII to Port 7 of a KSZ9897A switch.  Port 7 is configured as an external PHY, and I would like to access the PHY using the MIIM interface for basic setup to take advantage of some existing code for similar switch configuration.
 
While I can access ports 1-5 with MDIO/MDC (e.g., reading the ID), I get no port 7 response.  While I couldn't find it explicitly in the datasheet/manual, I'm starting to suspect the KSZ9897A doesn't support MIIM on port 7 (and probably port 6).  Is this is a correct assumption?  Is SPI or I2C the only way to access ports 6-7?
 
Thanks,
 
Jopana
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    morgan1361
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    Re: KSZ9897A Port 7 Accessible via MDIO/MDC? 2019/05/22 14:31:32 (permalink)
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    This is true for the KSZ9477 so I would assume that you cannot access them via MIIM
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