Cypress PSoC 4000 Series - Page 99

PSoC 4000 Family: PSoC 4 Architecture TRM, Document No. 001-89309 Rev. *D 99
Inter-Integrated Circuit (I2C)
15.2.12.2 Multi-Master - Slave Enabled
Figure 15-12. Multi-Master, Slave Enabled Flow Chart
Begin
Disable Fixed
Function I2C block
Select Master and
Slave mode
Enable
TX FIFO
Enable Fixed
Function I2C block
Send START
signal
Transmission
of one byte
slave address
complete?
No
(stretch)
E
Bus busy or
lost arbitration?
Error
Yes
Bus busy?
No
Yes
No
Continue with data transfer as
in single master
E
Report and
handle error
Yes
Continue with address
recognition as a slave
End