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Valid Transmission

After Power On SM5172 enters the Search Address mode, if SM5172 finds 2 consecutive

Address that matches the Address Pin setting of SM5172 then it will set VT high.

If VT is set high, SM5172 is still in search Address. After 2 consecutive Address that do not

match the setting on SM5172, SM5172 will disable VT.

The timing are shown in the following diagram.

Latch or Momentary Data Output Type

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 mode. It will

compare perviously 2 receive data, if they match each then SM5172 will set VT high and send

data O/P.

SM5172 re-enters Address search mode, after 2 consecutive Address that do not match the

setting on SM5172 will disable VT and momentary's data but keep Latch's data intact.

1st Address

S

2nd Address

S

VT

DIN

OCT. 2001

DIN

DATA WORDS

DATA WORDS

TT

DATA OUTPUT X

DATA OUTPUT Y

DATA PINS

(Momentary)

DATA OUTPUT X

DATA OUTPUT Y

DATA PINS

(Latch)

VT

T= 2 CODE WORD WIDTH

SM5172

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