SAMHOP Microelectronics Corp.
3
12
RF DECODER
SM5172
DECODER WITH DATA OUTPUT PINS
Power ON
NO
Address
match?
YES
After Power On SM5172 is set in Address search
mode, if SM5172 finds 2 consecutive Address that
matches the Address setting of SM5172.
SM5172 will enter Data Compare m ode. It will
compare previously 2 received data, if they match
then SM5172 will set VT high and send data O/ P.
NO
Address
match?
YES
NO
Data match?
YES
Active VT and
O/P data
SM5172 re-enters Address search mode, after 2
consecutive Address that do not match setting on
SM5172 will disable VT and momentary's data but
keep Latch's data intact.
YES
Address
match?
NO
YES
Address
match?
NO
Disable VT and Remove the
Momentary data.
But keep the Latch Type data
intact.
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