Status Register
| TXCOMP | Transmission Completed (cleared by writing TWI_THR) |
| RXRDY | Receive Holding Register Ready (cleared by reading TWI_RHR) |
| TXRDY | Transmit Holding Register Ready (cleared by writing TWI_THR) |
| SVREAD | Slave Read |
| SVACC | Slave Access |
| GACC | General Call Access (cleared on read) |
| OVRE | Overrun Error (cleared on read) |
| NACK | Not Acknowledged (cleared on read) |
| ARBLST | Arbitration Lost (cleared on read) |
| SCLWS | Clock Wait State |
| EOSACC | End Of Slave Access (cleared on read) |
| ENDRX | End of RX buffer (cleared by writing TWI_RCR or TWI_RNCR) |
| ENDTX | End of TX buffer (cleared by writing TWI_TCR or TWI_TNCR) |
| RXBUFF | RX Buffer Full (cleared by writing TWI_RCR or TWI_RNCR) |
| TXBUFE | TX Buffer Empty (cleared by writing TWI_TCR or TWI_TNCR) |