Control register 2
| ADDM7 | 7-bit Address Detection/4-bit Address Detection  |  
| STOP | STOP bits  |  
| SWAP | Swap TX/RX pins  |  
| RXINV | RX pin active level inversion  |  
| TXINV | TX pin active level inversion  |  
| DATAINV | Binary data inversion  |  
| MSBFIRST | Most significant bit first  |  
| ADD | Address of the USART node  |