LG Electronics 42PC5, 60PC4, 42LC5, 37LC4, 37LC5 IR Codes, 1st frame, Repeat frame, Bit description

APPENDIX

IR CODES

1. How to Connect

AConnect your wired remote control to the Remote Control port on the TV.

2.Remote Control IR Codes

AOutput 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

AConfiguration 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

ALead code

APPENDIX

9 ms

ARepeat code

9 ms

4.5 ms

0.55 ms

2.25 ms

A	Bit description
	Bit ”0”	Bit ”1”

0.56 ms

1.12 ms

A 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

106