TSENG ET6000 / ET6100 / ET6300

I'm doing research into graphic controllers and processors and part of
my research is to focus on the TSENG line of devices. I found data
sheets describing the ET3000 and ET4000 but I haven't been able to
find much more than press releases on the ET6000 series of devices.
I'm looking for information on the desgin and architecture. Any
information would be greatly appreciated.

Thanks,
Derek