SC932A CS I/O to RS-232-DCE Interface
2
2. Specifications
RS-232 9-Pin Male Connector Pin-out:
Pin No. I/O Name Description
1
In
DCD
Data Carrier Detect (No Connection)
2
In
RXD
Received Data
3
Out TXD
Transmitted Data
4
Out DTR
Data Terminal Ready (5 V Supply from CS I/O)
5
GND
Signal Ground
6
In
DSR
Data Set Ready (No Connection)
7
Out RTS
Request to Send – Modem Enable
8
In
CTS
Clear to Send (No Connection)
9
In
Ring
Rings Datalogger
CS I/O 9-Pin Male Connector Pin-out:
Pin No. I/O
Name
Description
1
in
+5V
Regulated 5 Volt supply
2
GND
Ground
3
out
RING
Ring signal to datalogger
4
out
RXD
SC932A transmits on this line
5
in
ME
Modem Enable—must be high for transfer
6
in
SDE
Synchronous Device Enable—data blocked when high
9
in
TXD
SC932A receives on this line
