SNLS779A July 2025 – November 2025 DP83TC815-Q1
PRODUCTION DATA
During software initialization when the device is powering-up, initialize the PTP clock in preparation for synchronizing to the leader clock. The PTP_CLKSRC register must be configured prior to enabling the IEEE802.1AS function to allow correct operation. During the initial synchronization attempt, the system time clock can be a little far apart from the PTP leader clock, so the system time clock most likely requires a step-time adjustment to get the clock closer to the actual time. After that, the continuous time adjustment method or temporary time adjustment method can be the best options when the system time clock is close to being synchronized with the leader clock.