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Section 16 Multiplex Mode
16.3.2
Serial Multiplexed Mode Register 1 (SMR1)
SMR1 is a register that monitors the port and controls the port output. In mode 2, this register
monitors the status of the RTS pin of SCIF.
Bit
Initial
Bit
Name
Value
7
CTS1
6
DTR1
1
5
RTS1
1
4
CTS3
3
2
RTS3
1
1,0
Rev. 1.00 Mar. 12, 2008 Page 544 of 1178
REJ09B0403-0100
R/W
Description
Monitors the state of the CTS pin of COM1 in mode 1.
R
Monitors the state of the RTS pin of SCIF in mode 2.
Controls the output on the DTR pin of COM1 in modes 3
R/W
and 4.
0: 0 is output
1: 1 is output
Controls the output on the RTS pin of COM1.
R/W
Controls the input on the CTS pin of SCIF in mode 2.
0: 0 is output
1: 1 is output
Monitors the state of the RTS pin input of SCIF in mode
R
4.
R
Reserved
Controls the output on the CTS pin of SCIF.
R/W
0: 0 is output
1: 1 is output
R/W
Reserved
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