RL78/F13, F14 CHAPTER 15 SERIAL ARRAY UNIT
R01UH0368EJ0210 Rev.2.10 948
Dec 10, 2015
(2) Operation procedure
Figure 15-113. Initial Setting Procedure for Slave Transmission/Reception
Caution Be sure to set transmit data to the SDRpL register before the clock from the master is started.
Remark m: Unit number (m = 0, 1), n: Channel number (n = 0, 1), p: CSI number (p = 00, 01, 10, 11),
mn = 00, 01, 10, 11
Starting initial setting
Setting the PER0 register
Setting the SPSm register
Setting the SMRmn register
Setting the SCRmn register
Setting the SDRmn register
Setting the SOm register
Changing setting of the SOEm register
Setting port
Writing to the SSm register
Starting communication
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 any value for baud
rate settin
.
Set the initial output level of the serial
data (SOmn).
Set the SOEmn bit to 1 and enable data
output of the target channel.
Enable data 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
and set the SEmn bit to 1 (to enable
operation).
Set transmit data to the SDRmn register
and wait for a clock from the master.
Setting port
Writing to the SSEm register
Set the SSEm bit of the target channel to
1 and enable operation of slave select
input function of the target channel.
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