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FUJITSU MB91F109 FR30 User Manual

Page 288

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CHAPTER 10 UART

Figure 10.10-2 Communication Flowchart for Mode 1

END

Yes

No

Yes

No

START

(Host CPU)

Set "0" in A/D

Communication with slave CPU

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

Enable the receive operation

Is the communication

finished?

Communicate with

another slave CPU?

Disable the receive operation