Support for the following SMBus transaction types is mandatory. The use of PEC is optional. Refer to the SMBus specification and Technical Reference Manual for more detailed transaction diagrams.

Note that the SMBus Write Block and Read Block transaction types contain a repeated start condition, which may not be compatible with all I²C master device IP.

• Write Byte / Read Byte
• Write Word / Read Word
• Write Block / Read Block
• Send Byte / Receive Byte
• Block-Write-Block-Read Process Call (for SMBALERT_MASK commands)