control register 2
| ADCEN | A/D converter enable |
| RPEN | Repeat mode enable |
| ADCAL | A/D Calibration |
| ADCALINIT | initialize A/D calibration |
| OCDMAEN | DMA transfer enable of ordinary channels |
| DTALIGN | Data alignment |
| PCTESEL_L | Low bit of trigger event select for preempted channels conversion |
| PCTEN | Trigger mode enable for preempted channels conversion |
| OCTESEL_L | Low bit of trigger event select for ordinary channels conversion |
| OCTEN | Trigger mode enable for ordinary channels conversion |
| PCSWTRG | Conversion trigger by software of preempted channels |
| OCSWTRG | Conversion trigger by software of ordinary channels |
| ITSRVEN | Internal temperature sensor and VINTRV enable |
| PCTESEL_H | High bit of trigger event select for preempted channels conversion |
| OCTESEL_H | High bit of trigger event select for ordinary channels conversion |