Effect of bus disabling (RDEN bit) on RTC functionality

Document created by Nabeel Employee on Jun 3, 2015
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Setting this bit disables the output buses between RTC I/O voltage domain and RTC core voltage domain. It prevent floating node consumption when the RTC is not used. When this bit is set, the oscillator and counters will continue to function but neither of RTC_CLOCK or RTC_ALARM or RTC_SWTCH registers will be updated, also interrupts are not generated.