17.3.9 Start-Up Considerations

The presence of hardware NVR configuration fuses on the PIC32CX-BZ3 device allows the system configuration fuses to be ready upon exiting Reset. The following start-up conditions exist:

On any device Reset, no start-up time is required to transfer configuration values from the NVR memory into the configuration holding registers.
When
the device is active, the user can change the primary system clock source from FRC to SPLL by using the OSCCON register.

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