Renesas RL78 Series User Manual page 444

RL78/G1D
(2) Operation procedure
Figure 13-41. Initial Setting Procedure for Master Transmission/Reception
Setting the PER0 register
Setting the SPSm register
Setting the SMRmn register
Setting the SCRmn register
Setting the SDRmn register
Changing setting of the SOEm register
Writing to the SSm register
R01UH0515EJ0120 Rev.1.20
Dec 16, 2016
Starting initial setting
Setting the SOm register
Setting port
Completing initial setting
CHAPTER 13 SERIAL ARRAY UNIT
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 a transfer baud rate (setting the
transfer clock by dividing the operation
clock (f )).
MCK
Set the initial output level of the serial
clock (CKOmn) and serial data (SOmn).
Set the SOEmn bit to 1 and enable data
output of the target channel.
Enable data output and clock output of
the target channel by setting a port
register and a port mode register.
Set the SSmn bit of the target channel to 1
(SEmn bit = 1: to enable operation).
Set transmit data to the SIOp register (bits
7 to 0 of the SDRmn register) and start
communication.
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