Sony CXD5602 User Manual page 202

3.6.5.2.33 CntUpdateFlg(0xB8)
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Reserved
-
15 14 13 12
Reserved
-
By reading this register, you can see the interrupt flag notifying that RTC Counter has been updated (Interrupt
value before being controlled Enabled or Disabled by CntUpdateEn). If RTC Counter is updated under the
following conditions, CntUpdateFlg becomes "1". If you want to clear CntUpdateFlg to "0", write "1" on
CntUpdateClr.

Update of RTC Counter value

Synchronization of external RTC

Synchronization between internal RTCs

Correction of RTC Counter value
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CXD5602 User Manual
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3 2 1 0
Flg
RO