APPENDIX
80
IR CODES
APPENDIX
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Configuration of frame

1st frame
Repeat frame
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Lead code

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Repeat code

■BBiitt ddeessccrriippttiioonn
■FFrraammee iinntteerrvvaall:: TTff
The waveform is transmitted as long as a key is depressed.
C0C1 C2 C3 C4 C5 C6 C7 C0C1 C2 C3 C4 C5 C6 C7 D0D1 D2 D3 D4 D5 D6 D7 D0 D1D2 D3 D4 D5 D6 D7
Lead code Low custom code High custom code Data code Data code
Repeat code Tf
4.5 ms
9 ms
2.25 ms
9 ms
0.55 ms
0.56 ms
1.12 ms
0.56 ms
2.24 ms
Tf Tf
Tf=108ms @455KHz
Bit ”0” Bit ”1”
1. How to Connect
■Connect your wired remote control to the Remote Control port on the TV.

2. Remote Control IR Codes

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Output waveform

Single pulse, modulated with 37.917KHz signal at 455KHz
T1
Tc
Carrier frequency
FCAR = 1/TC = fOSC/12
Duty ratio = T1/TC = 1/3