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Initial set signals
Initial set signals
Back porch (B)
Data
H. Sync.
Sync (A)
Signal
(A)
TEXT
2.0
VGA (60Hz)
3.8
VGA (72Hz)
1.3
VGA (75Hz)
2.0
VGA (85Hz)
1.6
SVGA (56Hz)
2.0
SVGA (60Hz)
3.2
SVGA (72Hz)
2.4
SVGA (75Hz)
1.6
SVGA (85Hz)
1.1
Mac 16" mode
1.1
XGA (60Hz)
2.1
XGA (70Hz)
1.8
XGA (75Hz)
1.2
XGA (85Hz)
1.0
1152 x 864
1.2
(75Hz)
1280 x 960
1.0
(60Hz)
SXGA (60Hz)
1.0
SXGA (75Hz)
1.1
SXGA (85Hz)
1.0
UXGA (60Hz)
1.2
W-XGA (60Hz)
1.7
1280 x 800
1.6
(60Hz)
2
Front porch (D)
Active time (C)
3.0
20.3
1.9
25.4
4.1
20.3
3.8
20.3
2.2
17.8
3.6
22.2
2.2
20.0
1.3
16.0
3.2
16.2
2.7
14.2
3.9
14.5
2.5
15.8
1.9
13.7
2.2
13.0
2.2
10.8
2.4
10.7
2.9
11.9
2.3
11.9
1.8
9.5
1.4
8.1
1.9
9.9
2.5
16.0
2.4
15.3
Back porch (b)
Data
V. Sync.
Sync (a)
Signal
1.0
TEXT
0.6
VGA (60Hz)
0.8
VGA (72Hz)
0.5
VGA (75Hz)
1.6
VGA (85Hz)
0.7
SVGA (56Hz)
1.0
SVGA (60Hz)
1.1
SVGA (72Hz)
0.3
SVGA (75Hz)
0.6
SVGA (85Hz)
0.6
Mac 16" mode
0.4
XGA (60Hz)
0.3
XGA (70Hz)
0.2
XGA (75Hz)
0.5
XGA (85Hz)
1152 x 864
0.6
(75Hz)
1280 x 960
0.9
(60Hz)
0.4
SXGA(60Hz)
0.1
SXGA (75Hz)
0.4
SXGA (85Hz)
0.4
UXGA (60Hz)
0.8
W-XGA (60Hz)
1280 x 800
0.8
(60Hz)
Front porch (d)
Active time (c)
Vertical signal timing (lines)
(a)
(c)
3
42
400
2
33
480
3
28
480
3
16
480
3
25
480
2
22
600
4
23
600
6
23
600
3
21
600
3
27
600
3
39
624
6
29
768
6
29
768
3
28
768
3
36
768
3
32
864
3
36
960
3
38
1024
3
38
1024
3
44
1024
3
46
1200
3
23
768
3
24
800
(d)
1
10
9
1
1
1
1
37
1
1
1
3
3
1
1
1
1
1
1
1
1
1
1
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