C8051F850-C-GM Datasheet, PDF (269/328 Pages) Silicon Laboratories – Low-Cost 8-bit MCU Family with up to 8 kB of Flash

Table 24.9. SMB0CN Register Bit Descriptions
Bit
Name
Function
0
SI
SMBus0 Interrupt Flag.
This bit is set by hardware to indicate that the current SMBus0 state machine operation
(such as writing a data or address byte) is complete. While SI is set, SCL0 is held low
and SMBus0 is stalled. SI0 must be cleared by software. Clearing SI0 initiates the next
SMBus0 state machine operation.
Rev. 1.0
244