RXE=not_empty, CKMD=scl_not_active, RXF=not_full, TXF=not_full, TXE=not_empty, BUSY=idle
Status Register.
| BUSY | Bus transaction active status bit. 0 (idle): I2C Bus Idle. 1 (busy): I2C Bus Busy. |
| RXE | RX FIFO empty. 0 (not_empty): Not Empty. 1 (empty): Empty. |
| RXF | RX FIFO full. 0 (not_full): Not Full. 1 (full): Full. |
| TXE | TX FIFO empty. 0 (not_empty): Not Empty. 1 (empty): Empty. |
| TXF | TX FIFO full. 0 (not_full): Not Full. 1 (full): Full. |
| CKMD | SCL Drive Status. 0 (scl_not_active): Device not actively driving SCL clock cycles. 1 (scl_active): Device operating as master and actively driving SCL clock cycles. |