A read of this register returns the value
                of the receive complete interrupt mask.
            A write to this register directly affects
                the state of the corresponding bit in the Interrupt Status Register, causing an
                interrupt to be generated if a '1' is written.
            The following values are valid for all
                listed bit names of this register:
            0: Corresponding interrupt is enabled.
            1: Corresponding interrupt is
                disabled.
            Table 32-130. Register Bit Attribute
                    Legend| Symbol | Description | Symbol | Description | Symbol | Description | 
|---|
| R | Readable bit | HC | Cleared by Hardware | (Grey cell) | Unimplemented | 
| W | Writable bit | HS | Set by Hardware | X | Bit is unknown at Reset | 
| K | Write to clear | S | Software settable bit | — | — |