Figure 10.10-2 Communication Flowchart For Mode 1 - Fujitsu MB91F109 FR30 Hardware Manual

CHAPTER 10 UART
264

Figure 10.10-2 Communication Flowchart for Mode 1

(Host CPU)
START
Set transfer mode to 1
Set address data in D0 to D7
to select the slave CPU and
set A/D to "1", then transfer
one byte
Set "0" in A/D
Enable the receive operation
Communication with slave CPU
Is the communication
finished?
Yes
Communicate with
another slave CPU?
Yes
Disable the receive operation
No
No
END