ALPHA-TRX433S
ALPHA-TRX915S
ALPHA RF TRANSCEIVER
Programming guide
Brief description
ALPHA-TRX supports a command interface to setup frequency, deviation, output power and also data
rate. There is no need to change any hardware when using frequency-hopping applications
Commands
Timing diagram
Configuration Setting Command
bit
15
1
14 13
12
0
11 10
9
0
8
0
7
6
5
4
3
2
1
0
POR
0
0
0
0
el
ef
b1
b0
x3 x2 x1 x0 8008h
e l: Enable TX register
e f: Enable RX FIFO buffer
b1..b0: select band
b1
0
0
b0
0
1
band[MHz]
Reserved
433
1
1
0
1
868
915
x3..x0: select crystal load capacitor
x3
0
0
x2
0
0
x1
0
0
x0
0
1
load capacitor [pF]
8.5
9.0
0
0
1
0
9.5
0
1
1
0
1
1
1
1
1
1
0
1
10.0
15.5
16.0
DSALPHA-TRX-6 Feb ‘11
2009 RF Solutions Ltd.
Page 6
RFSOLUTIONS [ RFSOLUTIONS.LTD ]
