3.3.2.2 How Do I Access SFRS?

The compiler ships with header files that define variables that are mapped over the top of memory-mapped Special Function Registers (SFRs). Some device documentation refers to these as peripheral registers. Since these mapped variables are regular C variables, they can be used like any other object, and no new syntax is required to access the underlying register.

The name assigned to the variable is usually the same as the name specified in the device data sheet. See 3.3.2.3 How Do I Find The Names Used To Represent SFRs And Bits? if these names are not recognized.