With the DCRDR, provides debug access to the general-purpose registers, special-purpose registers, and the FP extension registers. A write to the DCRSR specifies the register to transfer, whether the transfer is a read or write, and starts the transfer
| REGSEL | Specifies the general-purpose register, special-purpose register, or FP register to transfer |
| REGWNR | Specifies the access type for the transfer |