Renesas RX100 Series User Manual page 759

RX13T Group
Master transmission
No
ICSR2.NACKF = 0?
No
Write data to ICDRT register
No
No
ICSR2.STOP = 0
No
ICSR2.NACKF = 0
ICSR2.STOP = 0
End of master transmission
Figure 24.6 Example of Master Transmission Flowchart
R01UH0822EJ0100 Rev.1.00
Jul 31, 2019
Initial settings
ICCR2.BBSY = 0?
Yes
ICCR2.ST = 1
No
Yes
ICSR2.TDRE = 1?
Yes
All data transmitted?
Yes
ICSR2.TEND = 1?
Yes
ICCR2.SP = 1
ICSR2.STOP = 1?
Yes
[1] Initial settings
2
[2] Check I C-bus occupation and issue
a start condition.
[3] Transmit slave address and W (first byte).
[4] Check ACK and set transmit data.
[5] Check end of last data transmission
and issue a stop condition.
[6] Check stop condition issuance
[7] Processing for the next transfer
operation
2
24. I C-bus Interface (RIICa)
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