MDEV-868-PRC datasheet(11/16 Pages) LINX

11 / 16 page

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Pin Descriptions

Pin Number

Name

I/O Description

12, 18,

22–37, 47-56

—

No Electrical Connection. Do not connect

any traces to these lines.

ACK_EN

Pull this line high to enable the module to

send an acknowledgement message after a

valid control message has been received.

PAIR1

A high on this line initiates the Pair process,

which causes two units to accept each

other’s transmissions. It is also used with

a special sequence to reset the module to

factory default configuration.

CMD_DATA_OUT

Command Data Out. Output line for data

and serial commands

LNA_EN

Low Noise Amplifier Enable. This line is

driven high when receiving. It is intended to

activate an optional external LNA.

VCC

—

Supply Voltage

This line sets the input/output direction for

status lines S0-S3. When low, the lines are

outputs; when high they are inputs.

PA_EN

Power Amplifier Enable. This line is driven

high when transmitting. It is intended to

activate an optional external power amplifier.

This line sets the input/output direction for

status lines S4-S7. When low, the lines are

outputs; when high they are inputs.

38–45

S0–S71

I/O

Status Lines. Each line can be configured

as either an input to register button or

contact closures or as an output to control

application circuitry.

ACK_OUT

This line goes high when the module

receives an acknowledgement message

from another module after sending a control

message.

These lines have an internal 20k

Ω pull-down resistor

These lines have an internal 10k

Ω pull-up resistor

Figure 8: EVM-fff-PRC Pin Descriptions

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