ADC common control register
| DUAL | Dual ADC mode selection |
| DELAY | Delay between 2 sampling phases |
| DMACFG | DMA configuration (for dual ADC mode) |
| MDMA | Direct memory access mode for dual ADC mode |
| CKMODE | ADC clock mode |
| VREFEN | VREFINT enable |
| TSEN | Temperature sensor enable |
| VBATEN | VBAT enable |