Distributor of Digi International: Excellent Integrated System Limited
Datasheet of XC09-038PKC-R - MODEM RF 900MHZ RS232/485
Contact us: [email protected] Website: www.integrated-circuit.com
9XCite™
RS
‐
232/485
RF
Modem
–
Product
Manual
v2.1
[2007.01.04]
©
2007
MaxStream,
Inc.
7
2.
Interfacing
Protocol
The 9XCite RS-232/485 RF Modem supports the following interfacing protocols:
• RS-232
• RS-485 (2-wire) Half-duplex
• RS-485 (4-wire) and RS-422
2.1. RS-232 Operation
2.1.1. DIP Switch Settings and Pin Signals
*
The
‘Pin
Reference
Name’
provides
an
associative
tag
that
references
commands
used
to
define
pin
behaviors.
GPI
stands
for
ʺ
General
Purpose
Input
ʺ
and
GPO
stands
for
ʺ
General
Purpose
Output
ʺ
.
As
an
example,
the
CD
command
is
used
to
define
the
behavior
of
GPO2
(DB
‐
9
pin
number
1).
The
‘Pin
Reference
Name’
is
the
name
used
when
referring
to
XCite
commands
and
parameters.
Table
2
‐
01. RS
‐
232
Signals
and
their
implementations
on
the
XCite
RF
Modem
(Low
‐
asserted
signals
are
distinguished
by
horizontal
line
over
pin
name.)
DB-9 Pin
RS-232
Name
Pin Reference
Name*
Description
Implementation
1
DCD
DO2
Data-Carrier-Detect
Connected to DSR (pin6)
2
RXD
DO
Received Data
Serial data exiting the RF modem (to host)
3
TXD
DI
Transmitted Data
Serial data entering into the RF modem (from host)
4
DTR
DI2
Data-Terminal-Ready
Can enable Power-Down on the RF modemy
5
GND
-
Ground Signal
Ground
6
DSR
DO2
Data-Set-Ready
Connected to DCD (pin1)
7
RTS /
CMD
DI1
Request-to-Send /
Command Mode
Provides RTS flow control or enables Command Mode
8
CTS
DO1
Clear-to-Send
Provides CTS flow control
9
RI
-
Ring Indicator
Optional power input that is connected internally to the
positive lead of the front power connector
Figure
2
‐
01.
RS
‐
232
DIP
Switch
Settings
DIP
Switch
settings
are
read
and
applied
only
while
powering
‐
on.
Figure
2
‐
02.
Pins
used
on
the
female
RS
‐
232
(DB
‐
9)
Serial
Connector
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