Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Renesas Electronics/R7FA6T1AD/CAC/CACR0#0x0
CFME=0
CAC Control Register 0
Clock Frequency Measurement Enable.
0 (0): Disable
1 (1): Enable
https://github.com/cmsis-svd/cmsis-svd-data