ASTRO VG-871 - LDDCCI4 [20 H 68 H]: DDC;CI Data Acquisition

Chapter 2 INDIVIDUAL FORMATS FOR VG CONTROL COMMANDS
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2.70 LDDCCI4 [20H 68H]: DDC/CI data acquisition
Function: This command gets the DDC/CI data of the designated program number.
When the program has any number from 1001 to 2000, the command reads
out from the fixed data. When the program number is 9999, the command
reads the data from the command work RAM.
Sequence: Type 3
Parameters:
STX
1 byte
02H
VG4CMD
1 byte
FDH
LDDCCI4
2 bytes
20H 68H
Program number
1 to 4 bytes
“0” to “2000”, “9999”
ETX
1 byte
03H
Fig. 2-70-1
Data:
STX
1 byte
02H
TRDT
1 byte
10H
Port
1 byte
“1” = DVI-1
“2” = DVI-2
“3” = HDMI-1
“4” = HDMI-2
“5” = PC-DVI
“6” = PC-VGA
“7” = TV-VGA/DVI
"8" = Reserved
"9" = DisplayPort1
"10" = DisplayPort2
"11"=DVI(iTMDS)1
"12"=DVI(iTMDS)2
"13"=iTMDS-Quad1,2
"14"=iTMDS-Quad3,4
"15"=HDMI-3 (for VG-882, 883)
"16"=HDMI-4 (for VG-882, 883)
Below is for VG-876
"17"=HDMI5 "18"=HDMI6 "19"=HDMI7
"20"=HDMI8 "21"=HDMI9 "22"=HDMI10
"23"=HDMI11 "24"=HDMI12 "25"=HDMI13
"26"=HDMI14 "27"=HDMI15 "28"=HDMI16
"29"=DisplayPort3 "30"=DisplayPort4
"31"=DisplayPort5 "32"=DisplayPort6
"33"=DisplayPort7 "34"=DisplayPort8
,
1 byte
2CH (Delimiter)
Mode
1 byte
“0” = Get , “1” = Set
,
1 byte
2CH (Delimiter)
VCP code
1 or 2 bytes
“0” to “FF”
,
1 byte
2CH (Delimiter)
Setting value
1 to 5 bytes
“0” to “65535”
ETX
1 byte
03H
Fig. 2-70-2