Hi, I am using STM32H563 Nucleo board, and found the PLL1VCOSEL bit of RCC PLL clock source selection register.There are duplicates in the settings.Does anyone know why is the settings duplicates?I would like to know why and use case. 

Does anyone know  what is the "PLL 1" parameter on STM32CubeMX clock tree?I am using STM32H563 Nucleo board and found that there is "PLL1" parameter.When I change this 0 to 1, SYSCLK was changed a little bit, 125 to 125.000122.I would like to know wh...