ASTRO VG-871 - SHT [48 H]: H Timing Data Registration

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4
4
INDIVIDUAL FORMATS FOR
CONTROL COMMANDS
4.1 SHT [48H]: H timing data registration
Function: This command registers the H timing data of the designated program
number. When the program number is 0, it writes the data into the buffer
RAM.
Sequence: Type 4
Command:
STX
1 byte
02H
SHT
1 byte
48H
Program number
1 to 3 bytes
“0” to “849”
ETX
1 byte
03H
Fig. 4-1-1
Data:
STX
1 byte
02H
TRDT
1 byte
10H
μ/dot
1 byte
“0” = μ, “1” = dot
DOT CLOCK
5 bytes
Sequence of digits from top: 10
2
, 10
1
, 10
0
, 10
-1
, 10
-2
H-PERIOD
4 bytes
μ = Sequence of digits from top: 10
1
, 10
0
, 10
-1
, 10
-2
dot = Sequence of digits from top: 10
3
, 10
2
, 10
1
, 10
0
H-DISPLAY
4 bytes
μ = Sequence of digits from top: 10
1
, 10
0
, 10
-1
, 10
-2
dot = Sequence of digits from top: 10
3
, 10
2
, 10
1
, 10
0
H-SYNC
4 bytes
μ = Sequence of digits from top: 10
1
, 10
0
, 10
-1
, 10
-2
dot = Sequence of digits from top: 10
3
, 10
2
, 10
1
, 10
0
H-BACK-PORCH
4 bytes
μ = Sequence of digits from top: 10
1
, 10
0
, 10
-1
, 10
-2
dot = Sequence of digits from top: 10
3
, 10
2
, 10
1
, 10
0
HD-START
4 bytes
μ = Sequence of digits from top: 10
1
, 10
0
, 10
-1
, 10
-2
dot = Sequence of digits from top: 10
3
, 10
2
, 10
1
, 10
0
HD-WIDTH
4 bytes
μ = Sequence of digits from top: 10
1
, 10
0
, 10
-1
, 10
-2
dot = Sequence of digits from top: 10
3
, 10
2
, 10
1
, 10
0
ETX
1 byte
03H
Fig. 4-1-2