The Cortex-M4 core is enabled: power on, clock on, no isolate, no reset and no retain.
The Cortex-M4 core is disabled: power off, clock off, isolate, reset and no retain.
The Cortex-M4 core is retained.
power off, clock off, isolate, no reset and retain.
The Cortex-M4 core is in the Reset mode: clock off, no isolated, no retain and reset.