There are three clock groups as follows.
- Main Clock Group (MCG). This group has the following PLLs:
- RPU PLL
- APU PLL
- PMC PLL
- NoC PLL
- CPM4/5 PLL
- RTC Clock Group (RCG). This is a real-time clock, and a dedicated internal clock for RTC. A clock divider is not required for this clock.
- Interface Clock Group (ICG). This group has clocks that are provided externally, like the clocks from the physical-side interface (PHY) and PL.
Note: PL side peripherals can be operated through a PL clock (PL_REF_CLK).