Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Infineon/XMC4300/SCU_CLK/CCUCLKCR#0x0
CCUDIV=Const_0
CCU Clock Control Register
CCU Clock Divider Enable
0 (Const_0): fCCU = fSYS
1 (Const_1): fCCU = fSYS / 2
https://github.com/cmsis-svd/cmsis-svd-data