Clock control register 2
| HSI14ON | HSI14 clock enable |
| HSI14RDY | HR14 clock ready flag |
| HSI14DIS | HSI14 clock request from ADC disable |
| HSI14TRIM | HSI14 clock trimming |
| HSI14CAL | HSI14 clock calibration |
| HSI48ON | HSI48 clock enable |
| HSI48RDY | HSI48 clock ready flag |
| HSI48CAL | HSI48 factory clock calibration |