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RL78/G1A CHAPTER 12 SERIAL ARRAY UNIT
R01UH0305EJ0200 Rev.2.00 550
Jul 04, 2013
(2) Operation procedure
Figure 12-104. Initial Setting Procedure for Address Field Transmission
Notes 1. 25 to 48-pin products
2. 64-pin products
Remark m: Unit number (m = 0, 1), n: Channel number (n = 0 to 3), mn = 00 to 03, 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
Setting port
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 a transfer baud rate (setting the
transfer clock by dividing the operation
clock
(
fMCK
))
.
Set the initial output level (1) of the serial
data (SOmn) and serial clock (CKOmn).
Enable data output, clock output, and N-ch open-
drain output (V
DD tolerance
Note 1
/EVDD tolerance
Note 2
)
mode of the target channel by setting the port
register, port mode register, and port output mode
re
g
iste
r
.
Starting communication