LG 42LG50 Owner's Manual (English) - Page 129

IR CODES, How to Connect, Remote Control IR Codes

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IR CODES 1. How to Connect I Connect your wired remote control to the Remote Control port on the TV. 2. Remote Control IR Codes I Output waveform Single pulse, modulated with 37.917KHz signal at 455KHz Tc Carrier frequency FCAR = 1/TC = fOSC/12 T1 Duty ratio = T1/TC = 1/3 I 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 Tf I Lead code 9 ms I Repeat code 4.5 ms 0.55 ms 9 ms 2.25 ms I Bit description Bit "0" 0.56 ms Bit "1" 1.12 ms I Frame interval: Tf The waveform is transmitted as long as a key is depressed. Tf Tf 0.56 ms 2.24 ms Tf=108ms @455KHz APPENDIX 127

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APPENDIX
127
IR CODES
■
Configuration of frame
1st frame
Repeat frame
■
Lead code
■
Repeat code
■
Bit description
■
Frame interval: Tf
The waveform is transmitted as long as a key is depressed.
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
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
■
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