SPRUIZ1B July 2023 – August 2024 TMS320F28P650DH , TMS320F28P650DK , TMS320F28P650SH , TMS320F28P650SK , TMS320F28P659DH-Q1 , TMS320F28P659DK-Q1 , TMS320F28P659SH-Q1
DC clock synchronization is the ability and procedure of the ESC to maintain the copy of the reference clock based on local clock (internal 64-bit time base) and other adjustment as derived by the procedure. The reference clock is the most accurate clock in the system and is typically held by one of the SubordinateDevices (Topologically first one after MainDevice is preferred). This time-base has a higher accuracy requirement and needs to periodically synchronize with an absolute time source like GPS or any other maintained time-base as in IEEE1588 network.
The synchronization order is as follows:
While the ESC requires two clocks of 25MHz and 100MHz, the 100MHz clock is used for the internal time-base and supports the best accuracy possible. Refer to Section 26.2.6.2 for more details on clocking.