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APPENDIX
107
Data5:
All data are transmitted by Hexadecimal code
* Two/One part Channel: 6th bit
This bit is used in a cable-ready system.
* Using physical channel: 5th bit
If the channel band is NTSC air or NTSC cable, channel
tuning can be done by only physical channel. In this
case, using physical channel bit must be low(0).
But if the channel band is ATSC air or ATSC cable, there
are two cases that physical channel enable or disable.
If the physical channel sending is meaningful, you should
set this bit low(0). If the physical channel sending is
meaningless, you should set this bit high(1).
Example)
1. Analog channel: NTSC cable, channel number(35),
main picture Command: ma 00 23 xx xx xx xx 01
attribute(0x01): main picture, two part(it’s not
mandatory), using physical channel, NTSC cable ‘xx’
data: don’t care major and minor channel number in
case analog channel tuning.
2. Digital channel: ATSC air, channel number(don’t know
physical channel, major(30), minor(3)), sub picture
Command: ma 00 xx 00 1E 00 03 A2
attribute(0xA2): sub picture, two part, not using
physical channel, ATSC air ‘xx’ data: don’t care analog
channel number in case digital channel tuning.
3. Digital channel: ATSC air, channel number(physi-
cal(20),major(20), minor(3)), sub picture Command:
ma 00 14 00 14 00 03 82
attribute(0x82): sub picture, two part, using physical
channel, ATSC air.
Acknowledgement[a][ ][Set ID][ ][OK][Data0][Data1]
[Data2][Data3][Data4][x][a][ ][Set ID]
[ ][NG][Data0][x]
2222.. CChhaannnneell AAdddd//DDeell ((CCoommmmaanndd:: mm bb))
To add and delete the channels
Transmission [m][b][ ][Set ID][ ][Data][Cr]
Data 0: Channel Delete Data 1: Channel Add
Acknowledgement [b][ ][Set ID][ ][OK/NG][Data][x]
2233.. KKeeyy ((CCoommmmaanndd:: mm cc))
To send IR remote key code.
Transmission [m][c][ ][Set ID][ ][Data][Cr]s
Data Key code: Refer to page 99.
Acknowledgement [c][ ][Set ID][ ][OK/NG][Data][x]
2244.. IInnppuutt sseelleecctt((CCoommmmaanndd:: xx bb)) ((MMaaiinn PPiiccttuurree IInnppuutt))
To select input source for TV.
Transmission [x][b][][Set ID][][Data][Cr]
Data 00 : DTV (Antenna) Data 01 : DTV (Cable)
Data 10 : Analog (Antenna) Data 11 : Analog (Cable)
Data 20 : AV1 Data 21 : AV2
Data 40 : Component 1 Data 41 : Component 2
Data 60 : RGB-PC Data 90 : HDMI1
Data 91 : HDMI2 Data 92 : HDMI3
Acknowledgement [b][ ][Set ID][ ][OK/NG][Data][x]
2255.. BBaacckk lliigghhtt((CCoommmmaanndd:: mm gg))
To adjust screen back light.
Transmission [m][g][][Set ID][][Data][Cr]
Data Min:0 ~ Max:64
Acknowledgement [g][ ][Set ID][ ][OK/NG][Data][x]
Step
NTSC Air
NTSC Cable
ATSC Air
ATSC Cable_std
ATSC Cable_hrc
ATSC Cable_irc
ATSC cable_auto
Reserved
...
Reserved
1
0
0
1
1
0
0
1
1
x
1
2
0
0
0
0
1
1
1
1
x
1
3
0
0
0
0
0
0
0
0
x
1
4
x
x
x
x
x
x
x
x
x
x
Reserved
5
0
1
Use
No Use
Using Physical
Channel
6
0
1
Two
One
Two/One
Part Channel
7
0
1
Main
Sub
Main/Sub
Picture
0
0
1
0
1
0
1
0
1
x
1