
Design Steps to Using the HS Series
Key Creation and Exchange from a Decoder to an Encoder.
DATA OUT
KEY IN
1
2
3
DATA IN
4
MODE_IND
CREATE KEY BUTTON
LEARN BUTTON
SEND COPY BUTTON
KEY OUT
1. Provide a serial data connection from the encoder’s DATA_OUT line
to the decoder’s DATA_IN line. Typically, this would be a wireless
line high to enter Create Key Mode. Take the CREATE KEY line low, and
LEARN BUTTON
Figure 16: Steps to Exchange a Key
Provide a serial data connection from the decoder’s KEY_OUT line to the
encoder’s KEY_IN line. Typically this would be a wire, contact, or infrared.
DATA OUT DATA IN
connection using a transmitter and receiver combination.
then the
2. On the decoder, set the LEARN line high and MODE_IND CREATE_KEY
2
4 1 ten times to
toggle the CREATE_KEY line high and low LEARN BUTTON generate the
key. 3
SEND COPY BUTTON
KEY IN KEY OUT
3. The encoder and decoder will automatically exchange the key using
the DATA_OUT / DATA_IN and KEY_OUT / KEY_IN lines. If the key
exchange is successful, the decoder and encoder MODE_IND lines will
go high for 1 second.
DEC A
DATA IN
DEC B
DATA IN
2
3
MODE_IND
CREATE KEY BUTTON
LEARN BUTTON
SEND COPY BUTTON
COPY IN
KEY OUT
GROUND
1
3
4
MODE_IND
CREATE KEY BUTTON
LEARN BUTTON
SEND COPY BUTTON
KEY OUT
COPY IN
GROUND
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