Renesas RL78/G15 User Manual

RL78/G15 CHAPTER 12 SERIAL ARRAY UNIT
R01UH0959EJ0110 Rev.1.10 Page 412 of 765
Mar 7, 2023
Figure 12-32. Procedure for Resuming Master Reception
Starting setting for resumption
Completing resumption setting
Wait until stop the communication target (slave) or
communication operation completed.
Set the initial output level of the serial clock
(CKOmn).
If the OVF flag remains set, clear this using serial flag
clear trigger register mn (SIRmn).
Enable 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).
Setting is completed.
Sets dummy data to the SIOp register (bits 7 to 0 of
the SDRmn register) and start communication.
(Selective)
Completing slave
preparations?
No
Yes
(Essential)
(Selective)
(Essential)
(Essential)
Changing setting of the SPSm
register
Changing setting of the SDRmn
register
Changing setting of the SMRmn
register
Changing setting of the SCRmn
register
Changing setting of the SOm register
Clearing error flag
Port manipulation
Writing to the SSm register
Port manipulation
(Essential)
(Selective)
(Selective)
(Selective)
(Selective)
Disable clock output of the target channel by setting a
port register and a port mode register.
Re-set the register to change the operation clock
setting.
Re-set the register to change the transfer baud rate
setting (setting the transfer clock by dividing
the operation clock (f
MCK
)).
Re-set the register to change serial mode register mn
(SMRmn) setting.
Re-set the register to change serial communication
operation setting register mn (SCRmn) setting.
Remark If PER0 is rewritten while stopping the communication to reset the serial array unit, wait until the
communication target (slave) stops or communication finishes, and then perform initialization instead of
restarting the communication.

Renesas RL78/G15 Specifications

General

Brand	Renesas
Model	RL78/G15
Category	Microcontrollers
Language	English