Status Register
| TXCOMP | Transmission Completed (cleared by writing TWIHS_THR) |
| RXRDY | Receive Holding Register Ready (cleared by reading TWIHS_RHR) |
| TXRDY | Transmit Holding Register Ready (cleared by writing TWIHS_THR) |
| SVREAD | Slave Read |
| SVACC | Slave Access |
| GACC | General Call Access (cleared on read) |
| OVRE | Overrun Error (cleared on read) |
| UNRE | Underrun 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) |
| MCACK | Master Code Acknowledge (cleared on read) |
| TOUT | Timeout Error (cleared on read) |
| PECERR | PEC Error (cleared on read) |
| SMBDAM | SMBus Default Address Match (cleared on read) |
| SMBHHM | SMBus Host Header Address Match (cleared on read) |
| SCL | SCL Line Value |
| SDA | SDA Line Value |