RCC Mode Definitions

[Justin1]

I could not find direct definition for the RCC mode options in CubeMX, are these correct?

RCC Mode Options:

1. 'Disable' - External oscillator disconnected
2. 'BYPASS Clock Source' -  External active clock source
3. 'Crystal/Ceramic Resonator' -  External passive oscillator connected

Is this correct? I assume so, just wanted to be safe for confirmation :)

CubeMX Loc: 'System Core->RCC->RCC Mode and Configuration->Mode->HSE&LSE'

[Piranha · Accepted solution]

You've got it right, but CubeMX is not a documentation... For STM32F091RC part HSE is documented in:

1. RM0091 6.2.1
2. AN4080 2.1

[Justin1]

CubeMX is an application, certainly. Not sure your reference to documentation, I was referencing the vocabulary and description shared by its user interface.