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LICAL-DEC-HS001

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型号: LICAL-DEC-HS001
PDF文件:
  • LICAL-DEC-HS001 PDF文件
  • LICAL-DEC-HS001 PDF在线浏览
功能描述: HS SERIES ENCODER DATA GUIDE
PDF文件大小: 392.42 Kbytes
PDF页数: 共9页
制造商: ETC2[List of Unclassifed Manufacturers]
制造商LOGO: ETC2[List of Unclassifed Manufacturers] LOGO
制造商网址:
捡单宝
PDF页面索引
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Page 4 Page 5
PIN DESCRIPTIONS
Data Lines
The encoder has eight data lines, D0 through D7. when the SEND line goes high,
the states of these lines are recorded, encrypted for transmission, then
reproduced on the outputs of the decoder.
SEL_BAUD
This line is used to select the baud
rate of the serial data stream. The
state of the line allows the selection of
one of two possible baud rates, as
shown in the adjacent table.
The baud rate must be set before power-up. The encoder will not recognize any
change in the baud rate setting after it is on.
SEL_TIMER
This line is used to set the length of inactive time before PIN reentry is required.
GND
These lines are connected to ground.
KEY_IN
This line is used to input the key from the decoder.
TX_CNTL
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 external devices, such as a 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 indication of transmission.
DATA_OUT
The encoder will output an encrypted serial data stream on this line. This line can
directly interface with all Linx RF transmitter modules or it can be used to
modulate an IR diode.
MODE_IND
This line will be activated while the encoder is in Get Key Mode or Create Pin
Mode. It allows the connection of a LED or other indicator for user feedback.
CREATE_PIN
When this line is taken high, the encoder will enter Create PIN Mode and allow
the user to set a Personal Identification Number (PIN) to control encoder access.
SEND
When this line goes high, the encoder will record the states of the data lines,
encrypt them for transmission, and send the packet as a serial bit stream through
the DATA_OUT line at the baud rate selected by the state of the SEL_BAUD line.
V
CC
This is the positive power supply.
Pin Name Pin Number I/O Description
D0-D7 1, 2, 13, 14, 17-20
I
Data Input Lines
SEL_BAUD 3
I
Baud Rate Selection Line
SEL_TIMER 4 I PIN Time-Out Timer Select Line
GND 5, 6
Ground
KEY_IN 7
I
Key Input Pin
TX_CNTL 8
O
External Transmitter Control Line
DATA_OUT 9
O
Serial Data Output
MODE_IND 10
O
Mode Indicator Output
CREATE_PIN 11
I
Create PIN Mode Selection Line
SEND 12
I
Encoder Send Data Line
V
CC
15, 16
Positive Power Supply
PIN ASSIGNMENTS
LICAL-ENC-HS001
D
D7
SEL
_
BAU
D
SEL
_
TIME
R
G
N
D
G
N
D
KEY
_
I
N
TX
_
CNT
L
DATA
_
OU
T
MODE
_
IN
D
D
5
D4
D
3
D2
V
CC
V
CC
D
1
D
0
SEN
D
CREATE
_
PI
N
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
Figure 4: HS Series Encoder Pin Assignments
SEL_BAUD Baud Rate (bps)
0 4,800
1 28,800
Table 5: Baud Rate Selection Table
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
CC
) at all times or the operation may not be predictable. The designer must
ensure that the input lines are never floating, either by using external resistors, by tying the lines directly to
GND or V
CC
, or by use of other circuits to control the line state.
Table 3: HS Series Encoder Pin Assignments
Get Key Mode ON for 1 second after a successful key transfer.
Create PIN Mode
Flashes* for 15 seconds while waiting for user to enter a PIN. It
stops flashing when the fourth number is entered or when it
times out.
Enter PIN Mode ON when each PIN is entered.
*Flash = ON for 200ms and OFF for 200ms
ENCODER MODE_IND INDICATION TABLE
The MODE_IND line is the primary means of indicating the state of the encoder
to the user. The table below provides definitions for the MODE_IND signals.
Table 4: HS Series Encoder MODE_IND Definitions
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