Hi,
I really doubt this. No one would reinvent new logic levels...
Anyway: use three resistors as voltage divider:
5V -> 2kOhm -> (3V) -> 1kOhm -> (2V) -> 2kOhm -> GND.
This generates 2V and 3V.
Connect to each of the nodes a 100uF capacitor to GND to stabilize the voltage (you could try with lower values like 10uF).
Then use a CMOS SPDT switch like 74HC4053 or 74HCT4053.
Connect the "S" to your microcontroller logic out.
Connect the "Y0" to the 2V node of the voltage divider
Connect the "Y1" to the 3V node of the voltage divider
Then "Z" is the 2V/3V level output.
Klaus