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 |