19.4 SMBus Support
The dsPIC33CK512MPT608 family devices have support for SMBus through options in the input voltage thresholds. There are two control bits to select one of three options: SMEN (I2CxCONL[8]) and Configuration bit, SMBEN (FDEVOPT[10]). I2CxCONL details the setting of these control bits.
| SMEN SFR Bit (I2CxCONL[8]) | SMBEN Configuration Bit (FDEVOPT[10]) | |
|---|---|---|
| I2C (default) | 0 | x |
| SMBus 2.0 | 1 | 0 |
| SMBus 3.0 | 1 | 1 |