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ALPHA-RX915S Datasheet(PDF) 8 Page - List of Unclassifed Manufacturers |
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ALPHA-RX915S Datasheet(HTML) 8 Page - List of Unclassifed Manufacturers |
8 / 16 page DSALPHA-3 Jul 09 © 2009 RF Solutions Ltd. Page 8 ALPHA RF MODULES ALPHA-TX ALPHA-RX x3..x0: select crystal load capacitor 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 . 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 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 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 |
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