problems with IOSTANDARD

Hi

Learning from the thread: "problems with IOSTANDARD", it shows that the
IO-voltage must be changed in hw and can not be programmed via ucf files.

We have problems with IO on the XUP Board (UG069) trying to connect a cmos
device which accepts 2 Volts input. When just looking at the tables of the
Expansion Headers and the Digilent Expansion Connectors it states LVTTL
(High in between 2.4 and 3.6 V) which should work with 2 Volts high input
threshold of our cmos device. Measuring with a scope gives barly 2 V output
on the Digilent Expansion Port. So to remedy this problem: 

Are there any jumpers that allow clamping to an higher value on the XUP
board?

What is the typical Pass Voltage of the IDTQS32861. It seems to me we have a
type with 1.3 V drop.

Thanks
ST