Well the manual as usual says nothing. The fact that it says there is a CC pair says nothing. BUT
It looks like the synth sends MIDI data, you can try recording those parameters that consis of multiple CC values and see what they look like. Use Ctrlr with the MIDI Mon or MIDI-OX with the MIDI IN monitor. Move the knobs that change those parameters from 0 to max and see what sort of data comes in on the MIDI interface, based on that you can easily say how this is encoded (4bits 7bits etc)