Hello, I've been reading documentation about master mode TWI of tinyAVR 2 and found TWI Master Operation diagram. It seems to indicate that interrupt is only raised before M1 and M2. When reading the description of M4 I've noticed that it also seems to raise the interrupt. Does M4 raise the interrupt? If M4 raises the interrupt what is the meaning of "Interrupt flag raised" diamond on the diagram? I've added relevant images to the attachments, I had problem with adding them directly to the post.