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| RXENS | Receiver Enable Status  |  
| TXENS | Transmitter Enable Status  |  
| MASTER | SPI Main Mode  |  
| RXBLOCK | Block Incoming Data  |  
| TXTRI | Transmitter Tristated  |  
| TXC | TX Complete  |  
| TXBL | TX Buffer Level  |  
| RXDATAV | RX Data Valid  |  
| RXFULL | RX FIFO Full  |  
| TXBDRIGHT | TX Buffer Expects Double Right Data  |  
| TXBSRIGHT | TX Buffer Expects Single Right Data  |  
| RXDATAVRIGHT | RX Data Right  |  
| RXFULLRIGHT | RX Full of Right Data  |  
| TXIDLE | TX Idle  |  
| TIMERRESTARTED | The USART Timer restarted itself  |  
| TXBUFCNT | TX Buffer Count  |