Title:
Engineering Specification: 12.1-inch AMLCD Monitor
Page
14 of 27
Document Number
: 023-0284-00
Revision:
A
4.5 Video Signal On-Off Sequences
The sequence for bringing up and removal of each video input signal can be in any sequence or
combination of input signals.
Video Modes
IBM VGA
VESA
Resolution
640x400
640x480
800x600
1024x768
Video Clock
25.175 MHz
25.175 M Hz
50.000 MHz
75.000 MHz
Horizontal Scan Freq.
31.468 KHz
31.468 KHz
48.077 KHz
56.476 KHz
Horizontal Line
Period
31.778 us 800 pixels
31.778 us 800 pixels
20.800 us 1040 pixels
17.707 us 1328 pixels
Horizontal Blanking
6.356 us 160 pixels
6.356 us 160 pixels
4.800 us 240 pixels
4.053 um 304 pixels
Horizontal Sync Pulse
3.813 us 96 pixels
3.813 us 96 pixels
2.400 us 120 pixels
1.813 us 136 pixels
Horizontal Front
Porch
0.636 us 16 pixels
0.636 us 16 pixels
1.120 us 56 pixels
0.320 us 24 pixels
Horizontal Back
Porch
1.907 us 48 pixels
1.907 us 48 pixels
1.280 us 64 pixels
1.920 us 144 pixels
Horizontal Active
Display
25.422 us 640 pixels
25.422 us 640 pixels
16.000 us 800 pixels
13.653 us 1024 pixels
Horizontal Sync
Polarity
-
-
-
-
Vertical Scan Freq.
70.087 Hz
59.94 Hz
72.184 Hz
70.069
Vertical Frame
Period
14.268 ms 449 lines
16.683ms 525 lines
13.853 ms 666 lines
14.272 ms 806 lines
Vertical Blanking
1.557 ms 49 line
1.430 ms 45 line
1.373 ms 66 lines
0.673 ms 38 lines
Vertical Sync Pulse
0.064 ms 2 lines
0.064 ms 2 lines
0.125 ms 6 lines
0.106 ms 6 lines
Vertical Front Porch
0.381 ms 12 lines
0.318 ms 10 lines
0.770 ms 37 lines
0.053 ms 3 lines
Vertical Back Porch
1.112 ms 35 lines
1.049 ms 33 lines
0.478 ms 23 lines
0.514 ms 29 lines
Vertical Active
Display
12.711 ms 400 lines
15.254 ms 480 lines
12.480 ms 600 lines
13.599 ms 768 lines
Vertical Sync Polarity
-
-
-
-
Note: VGA border is not included in the Active Display time described above.
