Channel Status Register
| RXRDY | Receiver Ready |
| TXRDY | Transmitter Ready |
| RXBRK | Break Received/End of Break |
| OVRE | Overrun Error |
| FRAME | Framing Error |
| PARE | Parity Error |
| TIMEOUT | Receiver Time-out |
| TXEMPTY | Transmitter Empty |
| ITER | Max number of Repetitions Reached |
| NACK | Non Acknowledge Interrupt |
| CTSIC | Clear to Send Input Change Flag |
| CTS | Image of CTS Input |
| MANERR | Manchester Error |