Serial Port Interface - Renesas M3A-HS49 User Manual

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2.3 Serial Port Interface

The SH7149 included in the M3A-HS49 contains a UART module. In the M3A-HS49, SCI channel 1 is connected to
J3 (Serial Port connector). Switch the connection of the J3 connector and J14 connector by the jumper (JP3, JP4)
setting.
Figure2.3.1 shows the block diagram of serial port interface in the M3A-HS49.
SH7149
RXD1(PA3)
TXD1(PA4)
Rev.1.0 Dec 15, 2006
REJ10J0917-0100
JP4
1
2
3
JP3
1
2
3
RXD1(PA3)
TXD1(PA4)
Figure2.3.1 Block Diagram of Serial Port Interface
RS232C
Connector (J3)
Driver
1
NC
2
3
4
5
GND
6
7
8
9
NC
Extension Connector (J14)
Functional Overview
2.3 Serial Port Interface
Serial Port
DCD
RxD
TxD
DTR
GND
DSR
RTS
CTS
RI
2-4