–

–

–

–

4

5

7 MODE_IND

9 CMD_DATA_IN

11 LATCH_EN

13 ACK_EN

15 CMD_DATA_OUT

17 VCC

19 C0

21 C1

23 NC

25 NC

27 NC

29 NC

31 NC

33 NC

35 NC

37 NC

GND 6

RESET 8

PDN 10

NC 12

PAIR 14

LNA_EN 16

LVL_ADJ 18

PA_EN 20

NC 22

NC 24

NC 26

NC 28

NC 30

NC 32

NC 34

NC 36

41 S3

42 S4

43 S5

44 S6

45 S7

46 ACK_OUT

47 NC

48 NC

49 NC

50 NC

51 NC

52 NC

53 NC

54 NC

55 NC

56 NC

40 S2

39 S1

38 S0

ANTENNA 1

2-5 GND (RF Connector)

Figure 5: EVM-xxx-RC Pin Assignments

Pin Descriptions

Pin Number

Name

I/O Description

1

ANTENNA

—

50-ohm RF Antenna Port

2, 3, 4, 5, 6

GND

—

Ground

7

MODE_IND

O

This line indicates module activity. It can

source enough current to drive a small

LED, causing it to flash. The duration of the

flashes indicates the module’s current state.

8

I

This line resets the module when pulled low.

It should be pulled high for normal operation.

9

CMD_DATA_IN

I

Command Data In. Input line for the serial

interface commands. If serial control is not

used, this line should be tied to ground

or POWER_DOWN to minimize current

consumption.

10

POWER_DOWN

I

Power Down. Pulling this line low places the

module into a low-power state. The module

is not functional in this state. Pull high for

normal operation. Do not leave floating.

11

LATCH_EN

I

If this line is high, then the status line

outputs are latched (a received command

to activate a status line toggles the output

state). If this line is low, then the output lines

are momentary (active for as long as a valid

signal is received).

Pin Descriptions

Pin Descriptions

Pin Number

Name

I/O Description

12, 22–25,

26–37, 47-56

NC

—

No Electrical Connection. Do not connect

any traces to these lines.

13

ACK_EN

I

Pull this line high to enable the module to

send an acknowledgement message after a

valid control message has been received.

14

I

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.

15

CMD_DATA_OUT

O

Command Data Out. Output line for the

serial interface commands

16

LNA_EN

0

Low Noise Amplifier Enable. This line is

driven high when receiving. It is intended to

activate an optional external LNA.

17

VCC

—

Supply Voltage

18

LVL_ADJ

I

Level Adjust. The voltage on this line sets

the transmitter output power level.

19

C0

I

This line sets the input/output direction for

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

outputs; when high they are inputs.

20

PA_EN

O

Power Amplifier Enable. This line is driven

high when transmitting. It is intended to

activate an optional external power amplifier.

21

C1

I

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

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.

46

ACK_OUT

O

This line goes high when the module

receives an acknowledgement message

from another module after sending a control

message.

1.

These lines have an internal 20k

Ω pull-down resistor

2.

These lines have an internal 10k

Ω pull-up resistor

Figure 6: EVM-xxx-RC Pin Descriptions

Pin Assignments

components. Always wear an ESD wrist strap and observe proper ESD

handling procedures when working with this device. Failure to observe

this precaution may result in module damage or failure.