APPENDIX
IR CODES
1.How to Connect
■Connect your wired remote control to the Remote Control port on the TV.
2.Remote Control IR Codes
■Output waveform
Single pulse, modulated with 37.917KHz signal at 455KHz
Tc
T1
Carrier frequency
FCAR = 1/TC = fOSC/12 Duty ratio = T1/TC = 1/3
■Configuration of frame
1st frame
Lead code | Low custom code | High custom code | Data code | Data code |
C0 C1 C2 C3 C4 C5 C6 C7 C0 C1 C2 C3 C4 C5 C6 C7 D0 D1 D2 D3 D4 D5 D6 D7 D0 D1 D2 D3 D4 D5 D6 D7
Repeat frame
Repeat code
■Lead code
Tf
APPENDIX
9 ms
■Repeat code
9 ms
4.5 ms
0.55 ms
2.25 ms
■Bit description
Bit ”0” |
|
| Bit ”1” | |
|
|
|
|
|
0.56ms
1.12ms
■Frame interval: Tf
The waveform is transmitted as long as a key is depressed.
0.56 ms
2.24 ms
Tf
Tf
Tf=108ms @455KHz
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