Renesas RL78/G1H, User Manual

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RL78/G1H CHAPTER 14 SERIAL ARRAY UNIT
R01UH0575EJ0120 Rev. 1.20 Page 367 of 920
Dec 22, 2016
Figure 14 - 35 Procedure for Resuming Master Reception
Remark If PER0 is rewritten while stopping the master transmission and the clock supply is stopped, wait until the
transmission target (slave) stops or transmission finishes, and then perform initialization instead of restarting the
transmission.
Disable clock output of the target channel by
setting a port register and a port mode register .
Port manipulation
Starting setting for resumption
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
Completing resumption
setting
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.
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.
(Essential)
(Selective)
Writing to the SSm register
Port manipulation
(Selective)
(Selective)
(Selective)
(Selective)
(Selective)
(Essential)
(Essential)
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.
Completing slave preparations?
No
Wait until stop the communication target (slave) or
communication operation completed.
Yes
(Essential)