MII & RGMII

[eliaz]

Hello,

I asked beforehand about imx6q's ability to use RGMII & MII peripheries  in the same time (Can these peripheries be active in the same time)?

answer: IMX6Q has ENET module, which supports MII, RMII, RGMII interfaces Pins affected are described in Table 23-1 (ENET External Signals) of the i.MX6 RM (Rev. 3, 07/2015). Only single interface may be used at a time because of multiplexing. 

what is the origin of multiplexing? is it pin mux or other kind?

please elaborate.

Regards,

Eli

[art]

Yes, the IOMUX multiplexing is meant here.

Moreover, i.MX6Q has only single Ethernet MAC core, so, only one PHY and only one Ethernet interface can be used at a time.

Have a great day,
Artur

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[eliaz]

As far as I can see RGMII doesn't use any of the pins of the MII, where does the multiplexing takes place? 

Thanks

Eli

[art]

When the RGMII interface is selected, the MII signals become non-functional. So, as I told before, only one interface is functional at a time.