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RL78/F13, F14 CHAPTER 15 SERIAL ARRAY UNIT

R01UH0368EJ0210 Rev.2.10 884

Dec 10, 2015

(2) Operation procedure

Figure 15-64. 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

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