MPC5748G MII_Lite

[AROK]

I'm looking for the setting to enable the MII_Lite mode of Ethernet controller on the Calypso.  COL, RX_ER and CRS signals are not available on our design.

I've found any information is MPC5748G_RM v3 about making  Ethernet controller ignoring theses signals.

[PetrS]

Hi,

No ENET setting is needed. Just pins should be handled accordingly.

See chapter 2.1 “MII versus MII-Lite” of the AN4577; http://www.nxp.com/files/32bit/doc/app_note/AN4577.pdf

It is written for the FEC module, but can be reused on MPC5748G too.

BR, Petr

[AROK]

That true for the MPC564xB-C. 

With the Calypso,  the MAC is supposed to support MII_Lite. More than this when both ethernet controller are used the COL pin is no longer available because it used for the second MII bus.

Rem: I'm trying to get some answers from my contact at NXP

Regards