XTWC=value1, XTMODE=value1, GTWC=value1
Background Request Source Control Register
| XTSEL | External Trigger Input Selection |
| XTLVL | External Trigger Level |
| XTMODE | Trigger Operating Mode 0 (value1): No external trigger 1 (value2): Trigger event upon a falling edge 2 (value3): Trigger event upon a rising edge 3 (value4): Trigger event upon any edge |
| XTWC | Write Control for Trigger Configuration 0 (value1): No write access to trigger configuration 1 (value2): Bitfields XTMODE and XTSEL can be written |
| GTSEL | Gate Input Selection |
| GTLVL | Gate Input Level |
| GTWC | Write Control for Gate Configuration 0 (value1): No write access to gate configuration 1 (value2): Bitfield GTSEL can be written |