Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Infineon/XMC4300/ECAT0/PDI_CONTROL#0x0
PDI=value1
PDI Control
On-chip bus clock
0 (value1): Interface deactivated (no PDI)
128 (value2): On-chip Bus
https://github.com/cmsis-svd/cmsis-svd-data