Datasheet & Quick Reference, S2B2232I/E v1.2
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www.usconverters.com
Page 4
DIP switch settings
Setup
CTS/RTS
Stop Bit
Parity
Role
Baud Rate
9
8
7
6-5
4
3-2-1
0: DIP Switch
1: AT Command
0: Disable
1: Enable
0: 1
1: 2
00: None
01: Odd
10: Odd
11: Even
0:Slave
1:Master
110:2400
111:4800
000:9600
001:19200
010:38400
011:57600
100:115200
101:230400
DB9 Female connector, pin configuration
Pin
Signal
DTE Direction
DCE Direction
Description
1
CD
Input
Output
Not connected
2
TxD
Output
Input
Transmitted data
3
RxD
Input
Output
Received data
4
DSR
Input
Output
Not connected
5
GND
N/A
N/A
Signal ground (and power GND if
powered by pin 9)
6
DTR
Output
Input
Not connected
7
CTS
Input
Output
Clear to send
8
RTS
Output
Input
Request to send (Default)
9
Vcc
Input
Input
Power supply (5 VDC, 1.0A)
▲ DCE
▼ DTE
DIP Switch
