40.5.6 Register Access Protection
Registers with write access can be optionally write-protected by the Peripheral Access Controller (PAC), except for the following:
- Device Interrupt Flag (INTFLAG) register
- Endpoint Interrupt Flag (EPINTFLAG) register
- Host Interrupt Flag (INTFLAG) register
- Pipe Interrupt Flag (PINTFLAG) register
Note: Optional write protection is indicated by the "PAC Write Protection" property in the
register description.
Write protection does not apply for accesses through an external debugger.