The controller chipset on the PS Eye (OV534) is a different one than is used in the Eye Toy (OV519).
You are right in that it is another chipset than the OV519. What I learned in other forums attempting to get it working in linux is the following:
EyeToy: OV519 + OV7648
Playstation Eye: OV538 + OV7721
The other forum even says if you open it up it has OV538 silkscreened on the board.
As far as I can tell, there aren't even windows drivers released for the OV538 as of yet.
If any of you or anyone else reading this thread does get it working, please post!
Thanks.