Thus it can work at line speeds up to 52 Mbps. All four SCC cores and HDLC engines can be configured independently from each other. As you can see it is quiet flexible as far as configuration is concerned. This is why it is intended for use in PC node controller systems.
Pictures Take a look at some commented pictures .
It is only available in German, but also shows a picture and a diagram despite some technical information. This is an English technical paper with a lot of background information. It should answer your remaining questions. Here is design information about the project. You may not sell this documentation or self-made cards built using this stuff, not to other radio amateurs nor to anybody else without my written permission.