Chip Directory (
http://www.xs4all.nl/~ganswijk/chipdir/ ) which is
usually infallible came up with this:
http://www.xs4all.nl/~ganswijk/chipdir/c/s.htm#smsc
but a cursory search of the SMSC site didn't come up with anything. Try
calling a human there.
Does anyone have a datasheet for the (very
discontinued) CRT5027 controller
(SMSC) that they would be willing to scan/send to me?