OPAMP2 control/status register
| OPAEN | Operational amplifier Enable |
| FORCE_VP | Force internal reference on VP (reserved for test) |
| VM_SEL | Inverting input selection |
| OPAHSM | Operational amplifier high-speed mode |
| CALON | Calibration mode enabled |
| CALSEL | Calibration selection |
| PGA_GAIN | Operational amplifier Programmable amplifier gain value |
| USERTRIM | User trimming enable |
| TSTREF | OPAMP calibration reference voltage output control (reserved for test) |
| CALOUT | Operational amplifier calibration output |