Power management

The two internal modes are handled by the power management unit (PMU), whereas the external is handled by the user via the ENABLE pin.

The System Disabled mode provides a way to override the PMU by manipulating voltages presented to the ENABLE pin.

The PMU steers system-wide clock and power in order to provide the power modes - System ON and System OFF. Under the various modes, internal blocks are automatically powered by the PMU as required by the application.