ALPHA-TX Datasheet, PDF (8/16 Pages) List of Unclassifed Manufacturers – ALPHA RF MODULES

ALPHA RF MODULES
ALPHA-TX
ALPHA-RX
x3..x0: select crystal load capacitor
x3 x2 x1 x0 Load capacitor [pF]
0
0
0
0
8.5
0
0
0
1
9.0
0
0
1
0
9.5
0
0
1
1
10.0
……
……
1
1
1
0
15.5
1
1
1
1
16.0
To integrate the load capacitor internal can not only save cost, but also adjust reference frequency by
software
ms: select modulation polarity
m2..m0: select frequency deviation
m2 m1 m0 frequency deviation[kHz]
0
0
0
30
0
0
1
60
0
1
0
90
0
1
1
120
1
0
0
150
1
0
1
180
1
1
0
210
.
．3 Power Management Command
bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 POR
1 1 0 0 0 0 0 0 a1 a0 ex es ea eb et dc C000h
a1： Crystal oscillator and synthesizer are enabled by Data transmit Command and disable by
Sleep command.
a0： Power amplifier is enabled by Data transmit Command and disable by Sleep Command.
ex：Enable crystal oscillator
es：Enable synthesizer
ea：Enable power amplifier
eb：Enable low battery detection funciton
et：Enable wake-up timer
dc：Disable output of CLK pin
．4 Frequency Setting Command
bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 POR
1 0 1 0 f11 f10 f9 f8 f7 f6 f5 f4 f3 f2 f1 f0 A7D0h
f11..f0: set operation frequency:
433band: Fc=430+F*0.0025 MHz
868band: Fc=860+F*0.0050 MHz
915band: Fc=900+F*0.0075 MHz
Fc is carrier frequency
DSALPHA-3 Jul 09
©2009 RF Solutions Ltd.
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