For the Mux part DS100MB203, when using 3.3V mode of operation it is noted in the datasheet that for 4 level inputs "VDD" is 3.3V. Is it the same case with LVCMOS input ? For example the LVCMOS input ENSMB, it is written that to enable SMBus slave mode, have to tie to VDD. Is this VDD referring to 3.3V or is it the VDD pin of Mux (2.5V).