User's Manual

Page 6 Page 7
V
CC
R1
1
00k
S
W
1
1
S
W
2
2
S
W
3
3
S
W
4
4
5
S
W
6
6
S
W
7
7
8
COM
9
S
M
1
R2
1
00K
V
CC
1
2
3
4
U3
V
CC
G
N
D
G
N
D
1
2
3
4
U5
DPAK
-
X2
1
2
3
4
U4
DPAK
-
X2
V
CC
V
CC
G
N
D
G
N
D
G
N
D
S1
L
ea
r
n
G
N
D
D1
LED
R
3
2
00
G
N
D
R4
1
00K
G
N
D
R
5
1
00K
R
6
1
00K
R7
1
00K
R
8
1
00K
R
9
1
00K
R1
0
1
00K
R11
1
00K
V
CC
G
N
D
R12
1
00k
G
N
D
B1
BAT-LINX2
032
ANT1
ANTENNA
1
2
3
4
U2
DPAK
-
X2
G
N
D
1
DATA IN
2
G
N
D
LAD
J/
V
CC
4
RF
OUT
5
G
N
D
V
CC
7
PDN
8
TX1
TXM
-
XXX
-
LR
G
N
D
G
N
D
G
N
D
R1
3
C1
D
6
DATA
_
OU
T
MODE
_
IN
D
S
EN
D
D1
V
CC
D2
D
3
D
5
U1
C3
4.7
uF
C2
10
pF
R2
3
1
00k
V
CC
3
1
5
MHz = 2koh
m
41
8
MHz = 2koh
m
4
33
MHz = 2koh
m
Figure 7: OTX-***-HH-LR8-MS Schematic
TYPICAL APPLICATIONS
The signal sent by the MS Long-Range transmitter can
be received by the LC Series receiver module or the LR
Series receiver module. The outstanding sensitivity of
the LR Series receiver offers the best range when used
with the OEM transmitters. The receiver module is then
connected directly to the MS Series decoder, which will
decode the transmitted signal.
When a button is pressed on the transmitter, a
corresponding line on the decoder will go high. This can
then be connected to external circuitry to perform
whatever function is required by the application.
The decoder must learn the transmitter’s address
before they can work together. This is done by taking
the LEARN line on the decoder high, typically with a
pushbutton switch. The MODE_IND line will start switching (if a LED is attached,
this will cause it to flash) indicating that the decoder is in Learn Mode. Press any
of the buttons on the transmitter to initiate a transmission. Take the LEARN line
high again to exit Learn Mode and the system is ready for use. The figure below
shows a schematic for a typical application.
The MS Long-Range transmitter
is set to 9,600bps, so
SEL_BAUD0 should be tied high
and SEL_BAUD1 tied low.
The decoder has several unique
features, such as Latch Mode,
Receiver Control, and TX_ID.
If the LATCH line is tied to V
CC
,
the outputs will go high on the
first transmission, then low on
the second. Figure 6 shows it
tied low, so the outputs will be
momentary (high for as long as a
signal is received which instructs
the decoder to make them high).
The RX_CNTL line can be
connected to the PDN line of the
receiver and the decoder will
activate the receiver with a 10%
duty cycle This greatly reduces
the average current consumption
of the system. The adjacent figure shows it tied to ground, but to use this feature,
connect the RX_CNTL line of the decoder directly to the receiver’s PDN line.
The TX_ID line will output a number associated with the originating transmitter /
encoder. Application Note AN-00156 shows how to use this feature.
Data guides for the receivers, the MS encoder, and the MS decoder can be
found on the Linx Technologies website, www.linxtechnologies.com.
G
N
D
G
N
D
V
CC
N
C
1
N
C
2
N
C
3
G
N
D
4
V
CC
5
PDN
6
R
SSI
7
DATA
8
N
C
9
N
C
1
0
N
C
11
N
C
12
N
C
1
3
N
C
14
G
N
D
1
5
ANT
1
6
RXM
-
LR
22
0
D
6
D7
SEL
_
BAUD
0
SEL
_
BAUD
1
G
N
D
G
N
D
LAT
CH
RX
_
CNT
L
TX
_
I
D
MODE_IN
D
D
5
D4
D
3
D2
V
CC
V
CC
D
1
D
0
DATA
_
I
N
LEARN
1
2
3
4
5
6
7
8
9
1
0
11
12
1
3
14
1
5
1
6
17
1
8
1
9
2
0
LI
C
AL-DE
C
-M
S001
V
CC
G
N
D
G
N
D
V
CC
Figure 6: LR Receiver and MS Decoder Schematic
RXM-***-LR
LICAL-DEC-MS001