Channel Status Register
| RXRDY | Receiver Ready (cleared by reading US_RHR) |
| TXRDY | Transmitter Ready (cleared by writing US_THR) |
| OVRE | Overrun Error (cleared by writing a one to bit US_CR.RSTSTA) |
| FRAME | Framing Error (cleared by writing a one to bit US_CR.RSTSTA) |
| PARE | Parity Error (cleared by writing a one to bit US_CR.RSTSTA) |
| TIMEOUT | Receiver Timeout (cleared by writing a one to bit US_CR.STTTO) |
| TXEMPTY | Transmitter Empty (cleared by writing US_THR) |
| LINBK | LIN Break Sent or LIN Break Received |
| LINID | LIN Identifier Sent or LIN Identifier Received |
| LINTC | LIN Transfer Completed |
| LINBLS | LIN Bus Line Status |
| LINBE | LIN Bus Error |
| LINISFE | LIN Inconsistent Synch Field Error |
| LINIPE | LIN Identifier Parity Error |
| LINCE | LIN Checksum Error |
| LINSNRE | LIN Slave Not Responding Error Interrupt Mask |
| LINSTE | LIN Synch Tolerance Error |
| LINHTE | LIN Header Timeout Error |