TRXQ1
RXQ1
FM NARROW BAND TRANSCEIVERS
TRXQ1 Pinout Detail
Top View
RF Gnd.
Antenna
1
2
18 Vcc RF
17 Dig. Gnd.
16 RF Baud
15 Host Baud
14 Rx Data
13 TX Data
12 Mode
Channel Select
IN #1
3
4
5
6
7
8
9
IN #2
OUT #1
OUT #2
LRN/LED
\CTS
11 \RTS
TRXQ1
Intelligent FM Transceiver
10 Vcc Digital
30.48
Pin Descriptions
Pin
Number
Name
Type
Power
In / Out
Description
For best results, this pin should be connected to the ground plane
against which the antenna radiates.
Nominal 50 ohm input/output impedance capacitively isolated from
the internal circuit.
1
2
RF GND
Antenna
Channel select option.
3
In
CS
Logic 0 selects 433.92MHz
Logic 1 selects 434.33MHz
Logic input #1
4
5
6
7
8
In
In
IN #1
IN #2
Logic input #2
Logic output #1
Out
Out
In/Out
OUT #1
OUT #2
LRN/LED
Logic output #2
Learn switch and status LED.
Logic ‘0’ is Clear To Send.
Connect to 0 volts via 2.2K to enable loop mode.
Positive supply voltage connection.
Logic ‘0’ is Request To Send.
9
Out
\CTS (loop)
10
11
Power
In
Dig Vcc
\RTS
Mode select option.
12
In
Logic ‘1’ or open selects addressed mode.
Logic ‘0’ selects broadcast mode.
MODE
13
14
In
Serial async. data input from the host.
Serial async. data output to the host.
TxData
RxData
Out
Host baud rate selection option.
15
16
In
In
Logic ‘1’ or open selects 9600 bauds.
Logic ‘0’ selects 19200 bauds.
RF baud rate (element time) select option.
Logic ‘1’ or open selects 400 us element time.
Logic ‘0’ selects 200 us element time.
Host Baud
RF Baud
17
18
Power
Power
0 volts.
GND
RF supply voltage connection. Level to be as Vcc Digital on pin 10
Decouple with a 100n capacitor close to the module supply pins.
VccRF
DS0353-9 March ‘05
©2005 Reg. No. 227 4001, ENGLAND
Page 5
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