Rev. 1.00

6

May 07, 2012

HT62104

Frame Code Transmission

Frame Code Transmission Timing

Whenakeyinputtriggeroccurs,thecorrespondingframecodewillbeoutputontheDOUTpinandtheframe

codewillberepeated4times.Adata“1”willalsoappearontheLEDpinaftertheinternalRCoscillatorstartsto

oscillate.

K1

IRC

LED

DOUT

FC 1FC1

FC 1FC1

K1

K1

K1

K1

fOSC=455 KHz

<1ms

32 ms

12 T

Signal Gap Time

FC 1: Key 1 Frame Code

Frame Code Transmission Timing

Sequential Key Input Transmission

Whenkeyinputtriggersoccurssequentially,thecorrespondingframecodeswillbeasequentialoutputonthe

DOUTpin.Thetransmissionwaveformisshowninthefollowingdiagram.

K1

K2

IRC

LED

DOUT

K1

K1

K1

K1

K2

K2

K2

K2

f

OSC

=455kHz

>32ms

K2

K2

K2

K2

32ms

32ms

FC 1: Key 1 Frame Code

FC 2: Key 2 Frame Code

Sequential Key Input Transmission