RL78/D1A User's Manual: Hardware - Renesas

Under development
Preliminary document
Specifications in this document are tentative and subject to change.
RL78/D1A CHAPTER 12 SERIAL ARRAY UNIT
(12) Serial output register m (SOm)
SOm is a buffer register for serial output of each channel.
The value of bit n of this register is output from the serial data output pin of channel n.
The value of bit (n + 8) of this register is output from the serial clock output pin of channel n.
SOmn of this register can be rewritten by software only when serial output is disabled (SOEmn = 0). When serial
output is enabled (SOEmn = 1), rewriting by software is ignored, and the value of the register can be changed only
by a serial communication operation.
CKOmn of this register can be rewritten by software only when the channel operation is stopped (SEmn = 0).
While channel operation is enabled (SEmn = 1), rewriting by software is ignored, and the value of CKOmn can be
changed only by a serial communication operation.
Figure 12-17. Format of Serial Output Register m (SOm)
Address: F0118H, F0119H (SO0), F0148H, F0149H (SO1), After reset: 0303H R/W
Symbol 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SOm 0 0 0 0 0 0 CKO
m1
CKO
mn
0 Serial clock output value is “0”.
1 Serial clock output value is “1”.
SO
mn
0 Serial data output value is “0”.
1 Serial data output value is “1”.
CKO
m0
0 0 0 0 0 0 SO
m1
Serial clock output of channel n
Serial data output of channel n
Caution Be sure to set bits 15 to 10, 7 to 2 of SOm to “0”.
Remark m: Unit number (m = 0, 1), n: Channel number (n = 0, 1),
mn = 00, 01, 10, 11
R01UH0317EJ0004 Rev. 0.04 581
Feb. 22, 2013
SO
m0