DBGMCU Configuration Register
| DBGSLEEP_CD | Allow D1 domain debug in Sleep mode |
| DBGSTOP_CD | Allow D1 domain debug in Stop mode |
| DBGSTBY_CD | Allow D1 domain debug in Standby mode |
| DBGSTOP_SRD | debug in SmartRun domain Stop mode |
| DBGSTBY_SRD | debug in SmartRun domain Standby mode |
| TRACECLKEN | Trace port clock enable |
| CDDBGCKEN | CPU domain debug clock enable |
| SRDDBGCKEN | SmartRun domain debug clock enable |
| TRGOEN | External trigger output enable |