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Pin
Number Name
3
GPO2 /
RX LED
4
TX_PWR
5
DI
6
DO
7
SHDN
8
GPI2 / SLEEP
9
GPO1 / CTS / RS-
485 TX_EN
10
GPI1 / RTS / CMD
XTend RF Module User Guide
High Impedance
I/O
during Shutdown
O
yes
O
yes
I
yes
O
yes
I
no
I
yes
O
yes
I
yes
Must
Connect
Function
-
General Purpose Output 2: <Default (CD=2)> Pin is
driven low. Refer
page 33 for other configuration options.
RX LED: Pin is driven high during RF data reception;
otherwise, the pin is driven low. Refer to the CD
Command
[CD (GPO2 Configuration) Command
page 33] to enable.
-
Transmit_Power: Pin pulses low during RF
transmission; otherwise, the pin is driven high to
indicate power is on and the module is not in Sleep or
Shutdown Mode.
yes
Data In: Serial data entering the module (from the UART
host).
-
Data Out: Serial Data exiting the module (to the UART
host).
yes
Shutdown: Pin is driven high during operation and low
during Shutdown. Shutdown enables the lowest power
mode (~5 µA) available to the module.
-
General Purpose Input 2: reserved for future use
SLEEP: By default, SLEEP is not used. To configure this
pin to enable Sleep Modes, use the SM and PW
commands.
-
General Purpose Output 1: reserved for future use
CTS (Clear-to-Send): <Default (CS=0)> When pin is
driven low, the UART host is permitted to send serial
data to the module. Refer to
Command
on page 34 for more information.
RS-485 Transmit Enable: To configure this pin to enable
RS-485 half and full-duplex communications. Refer to
(GPO1 Configuration) Command
information.
-
General Purpose Input 1: reserved for future use
RTS (Request-to-Send): By default, is not used. To
configure this pin to regulate the flow of serial data
exiting the module, refer to
Command
on page 50.
CMD (Command): By default, CMD is not used. To
configure this pin to enable binary command
programming, refer to
and
RT (GPI1 Configuration) Command
Pin signals
CD (GPO2 Configuration) Command
CS (GPO1 Configuration)
on page 34 for more
RT (GPI1 Configuration)
Binary commands
on page 26]
on page 50.
on
on
CS
10
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