MCF5282 FEC questions

[MikeBobowik]

Hi,

I am wondering if ECR[ETH_ENABLE] must be set in order to generate MII management frames, and what happens when ECR[ETH_ENABLE] is toggled on/off during communication with an attached PHY device? Also, what happens if the FEC is reset during communication with an attached PHY device?

One last thing, the user manual refers to an "MII_STATUS register" in one spot. What is that exactly?

Thanks,

Mike

[MikeBobowik]

Hi again,

After realising I posted this on a Friday, I decided to try and answer my own questions:

As I expected, ECR[ETH_ENABLE] has no effect on the MII.

A reset will completely terminate any communication with an attached PHY device. This means that if I write a routine to read and write PHY registers, it has to be aware of resets so that it doesn't hang waiting for an MII event.

I would appriciate it if someone could confirm this or let me know if I have missed something.

Mike