LICAL-ENC-MS001 Linx Technologies Inc, LICAL-ENC-MS001 Datasheet - Page 3

• Manufacturer Part Number: LICAL-ENC-MS001
• Description: IC ENCODER MS SERIES 20-SSOP
• Manufacturer: Linx Technologies Inc
• Series: MSr
• Type: Encoderr

Specifications of LICAL-ENC-MS001

• Package / Case: 20-SSOP
• Applications: RF, IR
• Mounting Type: Surface Mount
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2 V
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

Figure 4: MS Series Encoder Pin Assignments
D0-D7
SEL_BAUD0
SEL_BAUD1
GND
TX_CNTL
DATA_OUT
MODE_IND
CREATE_ADDR
SEND
V
NOTE:
None of the input lines have internal pull-up or pull-down resistors. The input lines must always be in a
known state (either GND or V
ensure that the input lines are never floating, either by using external resistors, by tying the lines directly to
GND or V
Page 4
PIN ASSIGNMENTS
CC
Pin Name
CC
, or by use of other circuits to control the line state.
10
1
2
3
4
5
6
7
8
9
D6
D7
SEL_BAUD0
SEL_BAUD1
GND
GND
GND
TX_CNTL
DATA_OUT
MODE_IND
1, 2, 13, 14, 17-20
CC
Pin Number
) at all times or the operation may not be predictable. The designer must
5, 6, 7
15, 16
LICAL-ENC-MS001
10
11
12
3
4
8
9
CREATE_ADDR
I/O
—
—
O
O
O
I
I
I
I
I
External Transmitter Control Line
Create Mode Selection Line
Baud Rate Selection Line
Baud Rate Selection Line
Encoder Send Data Line
Mode Indicator Output
Positive Power Supply
SEND
Serial Data Output
VCC
VCC
Data Input Lines
D5
D4
D3
D2
D1
D0
Description
Ground
20
19
18
17
16
15
14
13
12
11
PIN DESCRIPTIONS
Data Lines
SEL_BAUD0 and SEL_BAUD1
GND
TX_CNTL
DATA_OUT
MODE_IND
CREATE_ADDR
SEND
V
CC
The encoder has eight data lines, D0 through D7. The state of these lines are
captured when the SEND line goes high and encoded for transmission. Upon
successful reception, these states are reproduced on the outputs of the decoder.
These lines are used to
select the baud rate of the
serial data stream. The
state of the lines allows the
selection of one of four
possible baud rates, as
shown in the table.
The baud rate must be set before power up. The encoder will not recognize a
change in the baud rate setting after it is on.
These lines are connected to ground.
This line goes high when the SEND line goes high, and low when the SEND line
goes low. This can be used to power up an external RF or infrared transmitter
when the encoder is sending data, and power it down when the encoder is
asleep. It can also be used to drive a LED for visual transmit indication.
The encoder will output a serial data stream on this line. This line can directly
interface with all Linx RF transmitter modules.
This line is activated while the encoder is in Create Mode, allowing the
connection of a LED indicator. The LED will stay on for the entire time the
encoder is in Create Mode, indicating that the encoder is creating a new Code
Word.
When this line is taken high, the encoder will enter Create Mode and randomly
generate a new Code Word. This word will be continuously randomized while
this line is high, and will be saved as soon as this line is taken low.
When this line goes high, the encoder will record the states of the data lines,
retrieve the secure Code Word from memory, assemble the packet, and send it
as a serial bit stream out of the DATA_OUT line at the baud rate selected by the
states of the SEL_BAUD lines.
This is the positive power supply.
Table 3: Baud Rate Selection Table
SEL_BAUD1 SEL_BAUD0 Baud Rate (bps)
0
0
1
1
0
1
0
1
19,200
28,800
2,400
9,600
Page 5