Increment of the Seconds Field - 9.0 English

Tri-Mode Ethernet MAC LogiCORE IP Product Guide (PG051)

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9.0 English

Conceptually, the RTC seconds field is implemented in a similar way to the nanoseconds field. The seconds field should be incremented by a value of one whenever the synchronized RTC nanoseconds field saturates at one second. The RTC Seconds Field Offset Control and RTC Nanoseconds Field Offset Control allow the software to make large step corrections to the seconds field in a similar manner. Again, the step correction capability can be used to either initialize the RTC counter following reset or to synchronize the local RTC to that of the Grand Master Clock (when the local device is acting as a clock slave).