Ethernet on RCM5700 (possibly others) important note!

I’ve just spent 10 days and a few hundred quid trying to find out why my ethernet interface for a RCM5700 wouldn’t come up.

It turns out that the PHY chip that rabbit use on this module (and possibly others) requies the ACT and LINK leds to be fitted and used, otherwise the interface will not come up.

Share and enjoy!