RL78/G13 CHAPTER 12 SERIAL ARRAY UNIT
R01UH0146EJ0100 Rev.1.00 624
Sep 22, 2011
(2) Operation procedure
Figure 12-65. Initial Setting Procedure for Slave Transmission/Reception
Caution Be sure to set transmit data to the SlOp register before the clock from the master is started.
Starting initial setting
Setting the PER0 register
Setting the SPSm register
Setting the SMRmn register
Setting the SCRmn register
Setting the SDRmn register
Setting the SOm register
Changing setting of the SOEm register
Setting port
Writing to the SSm register
Starting communication
Release the serial array unit from the
reset status and start clock supply.
Set the operation clock.
Set an operation mode, etc.
Set a communication format.
Set bits 15 to 9 to 0000000B for baud
rate setting.
Set the initial output level of the serial
data (SOmn).
Set the SOEmn bit to 1 and enable data
output of the target channel.
Enable data output of the target channel
by setting a port register and a port
mode register.
et t
e
mn
t o
t
e target c
anne
to
and set the SEmn bit to 1 (to enable
Set transmit data to the SIOp register
(bits 7 to 0 of the SDRmn register) and
wait for a clock from the master.
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