ALPHA-RX915S RF Solutions, ALPHA-RX915S Datasheet - Page 16

• Manufacturer Part Number: ALPHA-RX915S
• Description: RECEIVER RF ALPHA 5.4V 915MHZ
• Manufacturer: RF Solutions

Specifications of ALPHA-RX915S

• Frequency: 915MHz
• Sensitivity: -98dBm
• Data Rate - Maximum: 115.2kbps
• Modulation Or Protocol: FM, FSK
• Current - Receiving: 12.5mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Voltage - Supply: 2.2 V ~ 5.4 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: Module
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Applications: -
• Memory Size: -

DSALPHA-4
bit
bit
bit
bit
4
5
6
7
15
1
15
15
1
15
1
． ． ． ．
． ． ． ．
． ． ． ．
． ． ． ．
The actual DRSSI threshold is related to LNA setup:
en: Enable the receiver
The wake-up period is determined by:
For continual operation, bit ‘et’ must be cleared and set
d6..d0: Set duty cycle D.C.= (D * 2 +1) / M *100%
d2..d0: select frequency of CLK pin
CLK signal is derive form crystal oscillator and it can be applied to MCU clock in to save a second
crystal. If not used, please set bit “dc” to disable CLK output
To integrate the load capacitor internal can not only save cost, but also adjust reference
frequency by software
t4..t0: Set threshold voltage of Low battery detector Vlb=2.2+T*0.1 [V]
en Enable low duty cycle mode
Wake-Up Timer Command
Low Duty-Cycle Command
Low Battery Detector and Microcontroller Clock Divider Command
AFC Command
Jul 09
T
0
1
1
1
1
d2
0
0
0
0
1
1
1
1
w a k e - u p
14
1
14
1
14
1
14
RSSI
13
1
13
0
13
13
0
d1
0
0
1
1
0
0
1
1
= M * 2
th
1
0
0
1
0
= RSSI
12
r4
12
0
12
0
12
d0
0
1
0
1
0
1
0
1
R
[ m s ]
setth
11
r3
11
1
11
0
11
1
0
1
0
1
+ G
Clock frequency[MHz]
1
1.25
1.66
2
2.5
3.33
5
10
LNA.
10
r2
10
1
10
10
0
ALPHA RF M
9
r1
9
0
-85
-79
-73
-67
-61
9
1
9
© 2009 RF Solutions Ltd.
8
r0
8
0
8
8
0
7
m7
7
d6
7
7
d2
6
m6
6
d5
6
6
d1
5
d4
5
m5
5
5
d0
ODULES
4
d3
4
m4
4
4
t4
3
d2
3
3
t3
3
m3
2
d1
2
2
t2
2
m2
1
d0
Page 16
1
1
t1
1
m1
0
en
0
0
t0
0
m0
POR
CCOEh
POR
POR
C200h
ALPHA-RX
ALPHA-TX
POR
E196h