I2C Master Control/Status
| I2C_MCS_RUN | I2C Master Enable |
| I2C_MCS_START | Generate START |
| I2C_MCS_ADRACK | Acknowledge Address |
| I2C_MCS_ACK | Data Acknowledge Enable |
| I2C_MCS_ARBLST | Arbitration Lost |
| I2C_MCS_IDLE | I2C Idle |
| I2C_MCS_BURST | Burst Enable |
| I2C_MCS_CLKTO | Clock Timeout Error |
| I2C_MCS_ACTDMATX | DMA TX Active Status |
| I2C_MCS_ACTDMARX | DMA RX Active Status |