The warm-up idle transition from 1400 to 1100 is mechanically controlled by the stepper motor, and that is controlled by the ECU.
Watch the stepper motor under two conditions 1) about 45 sec after you switch off the ignition you should see the stepper motor arm fully extend and then return to normal start position (the 'fax machine sound' )
Then, 2) when you start the bike cold it should move up slightly and gradually move back. That may give you an idea.