Renesas rl78 User Manual

 

RL78/G1A 

 

CHAPTER  12   SERIAL  ARRAY  UNIT 

R01UH0305EJ0200  Rev.2.00 

 

 

482  

Jul 04, 2013 

 

Starting setting for resumption

Port manipulation 

Changing setting of the SPSm register

Changing setting of the SMRmn register

Port manipulation 

Writing to the SSm register

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 serial mode 

register mn (SMRmn) setting. 

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).    Wait 

for a clock from the master. 

(Essential) 

(Selective) 

(Selective) 

(Essential) 

(Essential) 

Re-set the register to change serial 

communication operation setting register 

mn (SCRmn) setting. 

(Selective) 

Changing setting of the SCRmn register

If the OVF flag remain set, clear this 

using serial flag clear trigger register mn 

(SIRmn). 

(Selective) 

Clearing error flag 

Completing resumption setting

(Essential) 

Yes 

No 

Wait until stop the communication target 

(master)  

Completing master 

preparations? 

 

 

Remarks 1.  If PER0 is rewritten while stopping the master transmission and the clock supply is stopped, wait until 

the transmission target (master) stops or transmission finishes, and then perform initialization instead 

of restarting the transmission. 

m: Unit number (m = 0, 1), n: Channel number (n = 0 to 3), p: CSI number (p = 00, 01, 10, 11, 20, 21), 

mn = 00 to 03, 10, 11