UPD78F1502AGK-GAK-AX Datasheet, PDF (479/1031 Pages) Renesas Technology Corp – 16-Bit Single-Chip Microcontrollers

78K0R/Lx3
CHAPTER 14 SERIAL ARRAY UNIT
(13) Serial output level register m (SOLm)
SOLm is a register that is used to set inversion of the data output level of each channel.
This register can be set only in the UART mode. Be sure to set 0000H in the CSI mode and simplifies I²C mode.
Inverting channel n by using this register is reflected on pin output only when serial output is enabled (SOEmn =
1). When serial output is disabled (SOEmn = 0), the value of the SOmn bit is output as is.
Rewriting SOLm is prohibited when the register is in operation (when SEmn = 1).
SOLm can be set by a 16-bit memory manipulation instruction.
The lower 8 bits of SOLm can be set with an 8-bit memory manipulation instruction with SOLmL.
Reset signal generation clears this register to 0000H.
Figure 14-16. Format of Serial Output Level Register m (SOLm)
Address: F0134H, F0135H (SOL0), F0174H, F0175H (SOL1) After reset: 0000H R/W
Symbol
15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
SOLm
0
0
0
0
0
0
0
0
0
0
0
0
0 SOL 0 SOL
m2
m0
SOL
mn
Selects inversion of the level of the transmit data of channel n in UART mode
0 Communication data is output as is.
1 Communication data is inverted and output.
Caution Be sure to clear bits 15 to 3, 1 to “0”.
Remark m: Unit number (m = 0, 1), n: Channel number (n = 0, 2)
R01UH0004EJ0501 Rev.5.01
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Jun 20, 2011