STATE=IDLE
State Register
| BUSY | Bus Busy  |  
| MASTER | Master  |  
| TRANSMITTER | Transmitter  |  
| NACKED | Nack Received  |  
| BUSHOLD | Bus Held  |  
| STATE | Transmission State 0 (IDLE): No transmission is being performed. 1 (WAIT): Waiting for idle. Will send a start condition as soon as the bus is idle. 2 (START): Start transmitted or received 3 (ADDR): Address transmitted or received 4 (ADDRACK): Address ack/nack transmitted or received 5 (DATA): Data transmitted or received 6 (DATAACK): Data ack/nack transmitted or received  |