Renesas RL78/G1P Hardware User Manual page 434

RL78/G1P
(2) Operation procedure
Setting the PER0 register
Setting the SPSm register
Setting the SMRmn register
Setting the SCRmn register
Setting the SDRmn register
Writing to the ISC register
Writing to the SSm register
Starting setting to stop
(Selective)
(Essential) Writing the STm register
Changing setting of the
(Essential)
(Selective) Setting the PER0 register
Stop setting is completed
Remark m: Unit number (m = 0), n: Channel number (n = 0), p: CSI number (p = 00)
R01UH0895EJ0100 Rev.1.00
Nov 29, 2019
Figure 11-86. Initial Setting Procedure for Slave Reception
Starting initial settings
Setting port
Starting communication
Figure 11-87. Procedure for Stopping Slave Reception
No
TSFmn = 0?
Yes
SOEm register
CHAPTER 11 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 bits 15 to 9 to 0000000B for baud
rate setting.
Enable data input and clock input of the
target channel by setting a port register
and a port mode register.
Set the SSIE00 bit to 1 and enable slave
select function operation of channel 0.
S et the SSmn bit of the target channel to 1
(SEmn bit = 1: to enable operation) and wait
for a clock from the master.
If there is any data being transferred, wait for their
completion.
(If there is an urgent must stop, do not wait.)
Write 1 to the STmn bit of the target channel.
(SEmn = 0: to operation stop status)
Set the SOEmn bit to 0 and stop the output of the
target channel.
Reset the serial array unit by stopping the clock
supply to it.
After the stop setting is completed, go to the next
processing.
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