SPRUIU1C July 2020 – February 2024 DRA821U , DRA821U-Q1
The device provides several system clock outputs. Summary of these output clock signals is as follows:
Other clock outputs, that are routed directly from subsystems to device pins, are described in the respective module chapter.
Observation clock pins - MCU_OBSCLK0, OBSCLK0, OBSCLK1, and OBSCLK2 serve the following purposes:
Maximum frequency supported on both MCU_OBSCLK0, OBSCLK0, OBSCLK1, and OBSCLK2 pins is 200 MHz. Hence the divider at the output of each OBSCLK mux must be programmed to meet this limitation.
Unlike the OBSCLK pins which can select several different clocks for output, system clock pins (MCU_SYSCLKOUT0 and SYSCLKOUT0) are hardwired to dedicated clock resources (see Section 5.4.3.2)