DSALPHA-3

Jul 09

©

2009 RF Solutions Ltd.

Page 11

ALPHA-TX

ALPHA-RX

Receiver Programming Guide

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Brief description

The ALPHA Receiver is a low cost FSK Receiver with all RF functions integrated. It needs only an MCU,

crystal, decoupling capacitor and antenna to build a high reliability FSK transmitter. The operation

frequency can cover 300 to 1000MHz. Although each module can cover all frequencies, better

performance is obtained by using the module at the preset frequency

The module supports a command interface to setup frequency, deviation, output power and also data rate.

5

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Commands

1

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． Timing diagram

2

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． Configuration Setting Command

bit

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

0

POR

1

0

0

b1

b0

eb

et

ex

x3

x2

x1

x0

i2

i1

i0

dc

893Ah

b1..b0: select band

b1

b0

band[MHz]

0

0

315

0

1

433

1

0

868

1

1

915

eb：Enable low battery detection function

et：Enable wake-up timer

ex：Enable crystal oscillator

x3..x0: select crystal load capacitor

x3

x2

x1

x0

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