Fujitsu F2MC-16LX Hardware Manual page 435

Figure 21.3-11 Procedure for communication using the master/slave communication function
Start
(Master CPU)
Set operation mode 1
The SIN pin is specified as serial data input
Specify one-byte data (address data)
for selecting the slave CPUs in D0 to D7,
and send data (AD = 1)
Set AD to "0"
Enable reception
Communication
with slave CPUs
Communication
end?
YES
Communications
with other slave
CPUs?
YES
Prohibit reception
operation
CHAPTER 21 UART
NO
END
NO
419