I have a ready built design with a cyclone device offering nothing more than some (around 5 maybe) unconnected io pins showing up on a standard connector (pinhead, IDE-like) and like to transport out data as quickly as possible into another board for test purposes. I am thinking of just adding an eval board an linking them via a logical upload channel.
The question is, how this could be done easily? I intend to use a kind of serial connection and wire it directly - could a differential pair be of some use here ? What data bit rates colud I expect?
Different ideas ?
Thanks