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