ALPHA-TX Datasheet, PDF (9/16 Pages) List of Unclassifed Manufacturers – ALPHA RF MODULES

ALPHA RF MODULES
ALPHA-TX
ALPHA-RX
．5 Data Rate Command
bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 POR
1 1 0 0 1 0 0 0 r7 r6 r5 r4 r3 r2 r1 r0 C800h
r7..r0: set data rate
BR=10000000/29/：R+1：
BR is data rate
．6 Power Setting Command
bit 7 6 5 4 3 2 1
0 POR
1 0 1 1 0 p2 p1 p0 B0h
p2..p0: set relative output power:
Pout=Pmax-P*3 [dBm]
Pmax is the max output power; it is related to the antenna impedance.
．7 Low Battery Detector and Tx bit Synchronization 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 1 0 dwc 0 ebs t4 t3 t2 t1 t0 C200h
dwc：Disable wake-up timer periodical calibration
ebs：Enable TX bit synchronization function
t4..t0: Set threshold voltage of Low battery detector
Vlb=2.2+T*0.1 [V]
．8 Sleep 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 0 0 s7 s6 s5 s4 s3 s2 s1 s0 C400h
If crystal oscillator, synthesizer and power amplifier are auto-controlled, this command will close
power amplifier and synthesizer immediately, then stop crystal oscillator after S periods of CLK signal
．9 Wake-Up Timer Command
bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 POR
1 1 1 r4 r3 r2 r1 r0 m7 m6 m5 m4 m3 m2 m1 m0 E000h
The wake-up timer period is determined by:
T_wake-up = M * 2^R [ms]
For continual operation, bit ‘et’ must be cleared and set
． 10
Data Transmit Command
bit 7 6 5 4 3 2 1 0
11000110
This command indicate that the following data on SDI pin is to be transmitted, the transmission stops
if nSel return to hi.
． 11
bit 15
1
Status Register Read Command
14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
1 0 0 1 1 0000000000
POR
--
This command is used to read internal status register content, output starts at 8_th clock of SCK.
DSALPHA-3 Jul 09
©2009 RF Solutions Ltd.
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