4.1 Register Names
It is possible to access any register without using the module structures. To refer to a register directly, concatenate the module instance name, then add an underscore and the register name. The same naming convention is used when programming in assembly.
For example, to access the CTRLA register of Timer/Counter type B, instance
0, the name TCB0_CTRLA
can be used, instead of the access through the
structures.