FM N
ARROW
B
AND
T
RANSCEIVERS
RXQ1 Pinout Detail
Top View
RF Gnd. 1
Antenna 2
RF Gnd. 3
nc 4
Gnd. 5
nc 6
nc 7
nc 8
Gnd. 9
RXQ1
FM Transceiver
18 Channel Select
17 Vcc
16 Rx Select
22.86
15 Tx Select
14 Tx Data
13 nc
12 Rx Data
11 nc
10 Gnd.
TRXQ1
RXQ1
30.48
Pin Descriptions
Pin
Number
Name
Type
Description
1,3
2
4, 6, 7, 8,
11, 13
5, 9, 10
12
RF GND
Antenna
nc
GND
Rx
In
In / Out
-
In
Out
For best results, these pins should be connected to the ground
plane against which the antenna radiates.
Nominal 50 ohm input/output impedance capacitively isolated from
the internal circuit.
No Connection
Connect to 0 volts.
Received data output to host controller (CMOS logic out)
representing true data as supplied to the transmitter.
Transmit data input from host controller
Data input to the transmitter can be directly interfaced to CMOS
logic drive operating on the same supply voltage as the transceiver
Transmit select. Active LOW.
Receive select. Active LOW.
Positive supply voltage connection. Decouple with 100n ceramic
capacitor to ground.
Channel Select;
Logic 0 selects 433.92MHz
Logic 1 selects 434.33MHz
14
15
16
17
18
Tx
Tx SELECT
Rx SELECT
Vcc
CS
In
In
In
In
In
Operation Table
Tx Select
0
0
1
1
RX Select
0
1
0
1
Function
Power Down Mode
Transmit Mode
Receive Mode
Power Down Mode
DS0353-9 March ‘05
©2005 Reg. No. 227 4001, ENGLAND
7
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