NXP Semiconductors K22F series, Reference Manual, Page: 541 / 1407

• Internal Reference Clocks Auto Trim Machine (ATM) capability using an external
clock as a reference
• Reference dividers for both the FLL and the PLL are provided
• Reference dividers for the Fast Internal Reference Clock are provided
• MCG PLL Clock (MCGPLLCLK) is provided as a clock source for other on-chip
peripherals
• MCG FLL Clock (MCGFLLCLK) is provided as a clock source for other on-chip
peripherals
• MCG Fixed Frequency Clock (MCGFFCLK) is provided as a clock source for other
on-chip peripherals
• MCG Internal Reference Clock (MCGIRCLK) is provided as a clock source for other
on-chip peripherals
This figure presents the block diagram of the MCG module.
Chapter 25 Multipurpose Clock Generator (MCG)
K22F Sub-Family Reference Manual, Rev. 4, 08/2016
NXP Semiconductors 541