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Initial set signals
Initial set signals
Back porch (B)
Data
H. Sync.
Sync (A)
Signal
TEXT
VGA (60Hz)
VGA (72Hz)
VGA (75Hz)
2.0
VGA (85Hz)
1.6
SVGA (56Hz)
2.0
SVGA (60Hz)
3.2
SVGA (72Hz)
SVGA (75Hz)
SVGA (85Hz)
Mac 16" mode
XGA (60Hz)
XGA (70Hz)
XGA (75Hz)
XGA (85Hz)
1.0
1152 x 864
1.2
(75Hz)
W-XGA (60Hz)
1.7
1280 x 800
1.6
(60Hz)
1280 x 960
1.0
(60Hz)
SXGA (60Hz)
1.0
SXGA (75Hz)
1.1
SXGA (85Hz)
1.0
SXGA+ (60Hz)
1.2
UXGA (60Hz)
1.2
2
Front porch (D)
Active video (C)
(A)
2.0
3.0
20.3
3.8
1.9
25.4
1.3
4.1
20.3
3.8
20.3
2.2
17.8
3.6
22.2
2.2
20.0
2.4
1.3
16.0
1.6
3.2
16.2
1.1
2.7
14.2
1.1
3.9
14.5
2.1
2.5
15.8
1.8
1.9
13.7
1.2
2.2
13.0
2.2
10.8
2.4
10.7
2.5
16.0
2.4
15.3
2.9
11.9
2.3
11.9
1.8
9.5
1.4
8.1
2.0
11.4
1.9
9.9
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)
0.8
W-XGA (60Hz)
1280 x 800
0.8
(60Hz)
1280 x 960
0.9
(60Hz)
0.4
SXGA(60Hz)
0.1
SXGA (75Hz)
0.4
SXGA (85Hz)
0.7
SXGA+ (60Hz)
0.4
UXGA (60Hz)
Front porch (d)
Active video (c)
Vertical signal timing (lines)
(a)
(b)
(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
23
768
3
24
800
3
36
960
3
38
1024
3
38
1024
3
44
1024
3
33
1050
3
46
1200
(d)
1
10
9
1
1
1
1
37
1
1
1
3
3
1
1
1
1
1
1
1
1
1
1
1
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