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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
_q
Configuration
of frame
1st frame
code
Repeat frame
]
1__77
t
Repeat
code
Carrier frequency
FCAR = 1/TC = fOSC/12
Duty ratio = T1/TC
= 1/3
Tf
Lead code
m
Z
X
76
!
F
Repeat code
1
Bit description
Bit "0"
9 ms
1
4.5 ms
9 ms
t_
0.55 ms
Bit "1 "
Frame interval: Tf
The waveform is transmitted
as long as a key is depressed.
IQ
1
Tf
Tf
jm-
t
t
0.56
ms
"l
2.24
ms
"1
Tf=lO8ms
@455KHz
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