PLL1 Configuration Register
| MSEL1 | PLL1 Multiplier value. Supplies the value M in the PLL1 frequency calculations. |
| PSEL1 | PLL1 Divider value. Supplies the value P in the PLL1 frequency calculations. |
| RESERVED | Reserved, user software should not write ones to reserved bits. The value read from a reserved bit is not defined. |