DS0353-9 March ‘05

©2005 Reg. No. 227 4001, ENGLAND

Page 5

TRXQ1

RXQ1

TRXQ1 Pinout Detail

RF Gnd. 1

Antenna 2

Channel Select 3

10 Vcc Digital

11 \RTS

12 Mode

13 TX Data

14 Rx Data

15 Host Baud

16 RF Baud

17 Dig. Gnd.

18 Vcc RF

Top View

TRXQ1

Intelligent FM Transceiver

IN #1 4

IN #2 5

OUT #1 6

OUT #2 7

LRN/LED

8

\CTS

9

30.48

Pin Descriptions

Pin

Number

Name

Type

Description

1

RF GND

Power

For best results, this pin should be connected to the ground plane

against which the antenna radiates.

2

Antenna

In / Out

Nominal 50 ohm input/output impedance capacitively isolated from

the internal circuit.

3

CS

In

Channel select option.

Logic 0 selects 433.92MHz

Logic 1 selects 434.33MHz

4

IN #1

In

Logic input #1

5

IN #2

In

Logic input #2

6

OUT #1

Out

Logic output #1

7

OUT #2

Out

Logic output #2

8

LRN/LED

In/Out

Learn switch and status LED.

9

\CTS (loop)

Out

Logic ‘0’ is Clear To Send.

Connect to 0 volts via 2.2K to enable loop mode.

10

Dig Vcc

Power

Positive supply voltage connection.

11

\RTS

In

Logic ‘0’ is Request To Send.

12

MODE

In

Mode select option.

Logic ‘1’ or open selects addressed mode.

Logic ‘0’ selects broadcast mode.

13

TxData

In

Serial async. data input from the host.

14

RxData

Out

Serial async. data output to the host.

15

Host Baud

In

Host baud rate selection option.

Logic ‘1’ or open selects 9600 bauds.

Logic ‘0’ selects 19200 bauds.

16

RF Baud

In

RF baud rate (element time) select option.

Logic ‘1’ or open selects 400 us element time.

Logic ‘0’ selects 200 us element time.

17

GND

Power

0 volts.

18

VccRF

Power

RF supply voltage connection. Level to be as Vcc Digital on pin 10

Decouple with a 100n capacitor close to the module supply pins.