Ahh.. wrong thread. It's in here:

http://empegbbs.com/ubbthreads.php/topics/359473/Re_Tuner_serial_interface#Post359473

And a direct datasheet link for convenience:

http://riocar.org/download.php?op=getit&lid=43

That's the original from Hugo, though it appears to be for the tuner module, rather than simply the Temic chip itself.