RL78/F13, F14 CHAPTER 15 SERIAL ARRAY UNIT
R01UH0368EJ0210 Rev.2.10 818
Dec 10, 2015
15.3.11 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.
Set the SOEm register by a 16-bit memory manipulation instruction.
Set the lower 8 bits of the SOEm register with a 1-bit or 8-bit memory manipulation instruction with SOEmL.
Reset signal generation clears the SOEm register to 0000H.
Figure 15-14. Format of Serial Output Enable Register m (SOEm)
Address: F011AH, F011BH After reset: 0000H R/W
Symbol 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SOE0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
SOE
01
SOE
00
Address: F015AH, F015BH After reset: 0000H R/W
Symbol 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SOE1 0 0 0 0 0 0 0 0 0 0 0 0 0 0
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.
Caution Be sure to clear bits 15 to 2 of the SOE0 register and bits 15 to 2 of the SOE1 register to 0.
Remark m: Unit number (m = 0, 1), n: Channel number (n = 0, 1)
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