Renesas RL78 Series User Manual page 412

RL78/G1D
13.3.11 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.
Address: F012AH, F012BH (SOE0)
Symbol 15 14
SOE0 0 0
Address: F016AH, F016BH (SOE1)
Symbol 15 14
SOE1 0 0
SOE
mn
0 Stops output by serial communication operation.
1 Enables output by serial communication operation.
Caution Be sure to clear bits 15 to 3 and 1 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, 2 for m = 0, n = 0, 1 for m = 1)
R01UH0515EJ0120 Rev.1.20
Dec 16, 2016
Figure 13-15. Format of Serial Output Enable Register m (SOEm)
After reset: 0000H
13 12 11 10
0 0 0 0
After reset: 0000H
13 12 11 10
0 0 0 0
R/W
9 8 7 6
0 0 0 0
R/W
9 8 7 6
0 0 0 0
Serial output enable/stop of channel n
CHAPTER 13 SERIAL ARRAY UNIT
5 4 3 2
0 0 0 SOE
02
5 4 3 2
0 0 0 0
1 0
0 SOE
00
1 0
SOE SOE
11 10
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