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Pin
Number Name
11
CONFIG / RSSI
12-20
reserved / do not connect
* RF module has 10K W internal pull-up resistor
Note
When integrating the module with a Host PC board, all lines not used should be left disconnected (floating).
Electrical characteristics
The following drawing shows the basic RF link between hosts.
The data flow sequence is initiated when the first byte of data is received in the DI Buffer of the transmitting module
(XTend RF Module A). As long as XTend RF Module A is not already receiving RF data, data in the DI Buffer is packetized
then transmitted over-the-air to XTend RF Module B.
XTend RF Module User Guide
High Impedance
I/O
during Shutdown
I*
no
O*
no
Must
Connect
Function
-
Configuration: Pin can be used as a backup method for
entering Command Mode during power-up.
-
Receive Signal Strength Indicator: By default, pin is
used as an RSSI PWM output after at the conclusion of
the power-up sequence. Refer to the RP Command for
more information. The PWM output is 2.8V-level.
Electrical characteristics
11
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