DS0353-9 March ‘05 ©2005 Reg. No. 227 4001, ENGLAND Page 5
TRXQ1
RXQ1
FM N
ARROW BAND TRANSCEIVERS
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
22.86
30.48
7
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.
