RL78/G1H CHAPTER 14 SERIAL ARRAY UNIT
R01UH0575EJ0120 Rev. 1.20 Page 346 of 920
Dec 22, 2016
14.3.11 Serial output enable register m (SOEm)
The SOEm register is a register that is used to enable or stop output of the serial communication operation of
each channel.
Channel n that enables serial output cannot rewrite by software the value of the SOmn bit of serial output register
m (SOm) to be described below, and a value reflected by a communication operation is output from the serial
data output pin.
For channel n, whose serial output is stopped, the SOmn bit value of the SOm register can be set by software,
and that value can be output from the serial data output pin. In this way, any waveform of the start condition and
stop condition can be created by software.
The SOEm register can be set by a 16-bit memory manipulation instruction.
The lower 8 bits of the SOEm register can be set with a 1-bit or 8-bit memory manipulation instruction with
SOEmL.
Reset signal generation clears the SOEm register to 0000H.
Figure 14 - 17 Format of Serial output enable register m (SOEm)
Caution Be sure to clear bits 15 to 4, 1, and 0 of the SOE0 register, and bits 15 to 4 of the SOE1 register to “0”.
Address: F012AH, F012BH After reset: 0000H R/W
Symbol1514131211109876543210
SOE0000000000000
SOE
03
SOE
02
00
Address: F016AH, F016BH After reset: 0000H R/W
Symbol1514131211109876543210
SOE1000000000000
SOE
13
SOE
12
SOE
11
SOE
10
SOE
mn
Serial output enable/stop of channel n
0 Stops output by serial communication operation.
1 Enables output by serial communication operation.
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