ALPHA-TRX915S RF Solutions, ALPHA-TRX915S Datasheet - Page 9

• Manufacturer Part Number: ALPHA-TRX915S
• Description: TRANSCEIVER RF ALPHA 5.4V 915MHZ
• Manufacturer: RF Solutions

Specifications of ALPHA-TRX915S

• Frequency: 915MHz
• Data Rate - Maximum: 256kbps
• Modulation Or Protocol: FM
• Applications: Car Alarms, Remote Sensing, Wireless Security
• Power - Output: -21dbm
• Voltage - Supply: 2.2 V ~ 5.4 V
• Current - Receiving: 13mA
• Current - Transmitting: 25mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Operating Temperature: -45°C ~ 85°C
• Package / Case: Module
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Sensitivity: -
• Memory Size: -

DSALPHA-TRX-3
FIFO and Reset Mode Command
bit
Synchron pattern Command
bit
Receiver FIFO Read Command
bit
AFC Command
bit
starts at 8th SCK period.
15
1
15
1
15
1
15
1
f3..f0: Set FIFO interrupt level
sp: Select the length of the synchron pattern:
al: select FIFO fill start condition
ff: Enable FIFO fill
dr Disable hi sensitivity reset mode
This command is used to reprogram the synchronic pattern;
a1..a0: select AFC auto-mode
rl1..rl0: select range limit
st: st goes hi will store offset into output register
fi: Enable AFC hi accuracy mode
oe: Enable AFC output register
en: Enable AFC function
a1
0
0
1
1
This command is used to read FIFO data when FFIT interrupt generated. FIFO data output
r1
0
0
1
1
al
0
1
14
0
14
1
14
1
14
1
May09
13
1
13
0
sp
r0
0
1
0
1
13
0
0
1
a0
0
1
0
1
13
0
12
1
12
0
12
0
condition
Sync-word
Always
Range (fres)
No restriction
+15/-16
+7/-8
+3-4
12
0
Controlled by MCU
Run once at power on
Keep offset when VDI hi
Keeps independently from VDI
11
0
11
0
11
1
Not used
11
1
10
0
Byte1
10
1
2Dh
ALPHA RF T
10
0
10
1
9
0
9
0
©2009 RF Solutions Ltd.
9
1
8
0
9
1
8
0
Byte0 (POR)
8
0
7
0
8
0
7
a1
D4h
D4h
freq
7
f3
7
b7
6
0
6
a0
315 433band: 2.5kHz
868band: 5kHz
915band: 7.5kHz
6
f2
6
b6
5
0
RANSCEIVER
5
rl1
Synchron Pattern (Byte1+Byte0)
5
f1
5
b5
4
0
4
rl0
4
f0
4
b4
3
st
3
0
2DD4h
3
sp
3
b3
D4h
2
fi
2
0
2
al
2
b2
1
oe
Page 9
1
0
1
ff
1
b1
0
en
0
dr
0
b0
0
0
ALPHA-TRX433S
ALPHA-TRX915S
POR
C4F7h
POR
CA80h
POR
CED4h
POR
B000h