Common clock initializations are performed. 
*	Internal Clock Source (ICS) is configured for
	- FLL engaged internal (FEI) mode (default)
	- FLL engaged external (FEE) mode.
*	Clock dividers to peripherals are initialized
*	Clock frequency can be verified on BUSOUT pin.
*	 A Programmable Interrupt Timer (PIT) is initialized for a 1 second. At timeout an output (to LED) is toggled. 
