ALPHA-TX Datasheet, PDF (14/16 Pages) List of Unclassifed Manufacturers – ALPHA RF MODULES

ALPHA RF MODULES
ALPHA-TX
ALPHA-RX
．8 AFC Command
bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 POR
1 1 0 0 0 1 1 0 a1 a0 rl1 rl0 st fi oe en C6F7h
a1..a0: select AFC auto-mode：
a1
a0
0
0 Controlled by MCU
0
1 Run once at power on
1
0 Keep offset when VDI hi
1
1 Keeps independently from VDI
rl1..rl0: select range limit
r1
r0
range：fres：
0
0
No restriction
0
1
+15/-16
1
0
+7/-8
1
1
+3-4
Freq
315：433band: 2.5kHz
868band: 5kHz
915band: 7.5kHz
st: st goes hi will store offset into output register
fi: Enable AFC hi accuracy mode
oe: Enable AFC output register
en: Enable AFC funcition
9． Data Filter Command
bit 15 14 13 12 11 10 9 8
11000100
al: Enable clock recovery auto-lock
ml: Enable clock recovery fast mode
s1..s0: select data filter type
s1 s0 Filter type
0 0 OOK
0 1 Digital filter
1 0 reserved
765
al ml 1
f1..f0: Set DQD threshold
4 3 2 1 0 POR
s1 s0 f2 f1 f0 C42Ch
DSALPHA-3 Jul 09
©2009 RF Solutions Ltd.
Page 14