LG 3230DC - Manual (Page 107)

APPENDIX
107
IR CODES
■
Configuration of frame
1st frame
Repeat frame
■
Lead code
■ Repeat code
■ B Biitt d deessccrriip pttiio onn
■ FFrraam mee iinntteerrvvaall:: T Tff
The waveform is transmitted as long as a key is depressed.
C0 C1 C2 C3 C4 C5 C6C7 C0 C1 C2 C3 C4 C5 C6C7 D0 D1 D2 D3 D4 D5 D6D7 D0 D1 D2 D3 D4 D5 D6D7
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