SPRACU5C June 2021 – September 2023 AM2431 , AM2432 , AM2434 , AM6411 , AM6412 , AM6421 , AM6422 , AM6441 , AM6442
EXT_REFCLK1 clock pin is routed to clock muxes as one of the selectable input clock source to the Timer modules (DMTIMER/WDT), DMTIMER in Security Subsystem (SMS), MCAN and CPTS (Time Stamping Module). If an application needs a specific clock frequency to be fed to these modules then they have an option to use the EXT_REFCLK1 (for example: time synchronization or for clock quality reasons).