On Mon, Apr 28, 2008 at 11:26:15AM -0500, Rune Torgersen wrote:

Examples would be the FCC's on a Freescale PQ2 chip, where they are
encoded as ethernet controllers. (Thsy could be used as high-speed HDLC
controllers, ATM controllers and other usages), the SCC ports (as
serial, they can be used for syncronous serial and HDLC)

But that choice is made by board-level hardware, not purely by software.

-Scott