regarding MII and RMII interface

[shivakumarlv]

HI everyone

I am using freescale K70 series microcontroller (part number MK70FN1M0VMJ12) I have interfaced Ethernet switch IC ( part number LAN9303i) in MII. Whether Can I use this physical interface in RMII mode by keeping MII pins remain connected or I need to make NC( not connected ). Please confirm on this

Awaiting your reply

Regards,

Shiva kumar L V

Hardware Design Engineer - EE Excellence center,

Dover -IIC,

Web site:www.dovercorporation.com

Bangalore

Ph :-8050138478,

Skype ID :- shivakumarlv25@gmail.com

[Hui_Ma]

Hi,

There is no problem to keep MII pin connected (customer can set MII related pin with another function or keep the default setting at Pin Control Register n (PORTx_PCRn) register [MUX] bits).

The RMII operates at 50 MHz and requires synchronization between the PHY and the ENET RMII interface clock input(EXTAL).

Wish it helps.

Have a great day,
Ma Hui

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