User`s manual

Functional Overview
2.4 Serial Port Interface
Rev.1.01 Jan 31, 2008
2-11
REJ10J1262-0101
2
2.4 Serial Port Interface
In the M3A-HS11, the SCI channel 1 of SH7211 is connected to the serial port connector (J3).
Figure 2.4.1 shows the block diagram of serial port interface in the M3A-HS11.
SH7211
PA24/RXD1
PA25/TXD1
DCD
RxD
TxD
DTR
GND
DSR
RTS
CTS
RI
1
2
3
4
5
6
7
8
9
N
C
GN
D
N
C
Serial Port
Connector (J3)
RS-232C
Driver
Figure 2.4.1 Block Diagram of Serial Port Interface