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APPENDIX
APPENDIX
IR CODES
A
Configuration of frame
1st frame
Repeat frame
A
Lead code
A
Repeat code
A
B
Biitt d
deessccrriip
pttiio
on
n
A
FFrraam
mee iin
ntteerrvvaall:: T
Tff
The waveform is transmitted as long as a key is depressed.
C0 C 1 C 2 C 3 C 4 C 5 C 6 C 7 C 0 C 1 C 2 C 3 C 4 C 5 C 6 C 7 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
A
Connect your wired remote control to the Remote Control port on the TV.
2. Remote Control IR Codes
A
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
