SoCKit User Manual
30
www.terasic.com
December 1, 2015
Figure 3-18 VGA horizontal timing specification
Table 3-15 VGA Horizontal Timing Specification
VGA mode
Horizontal Timing Spec
Configuration
Resolution(HxV)
a(us)
b(us)
c(us)
d(us)
Pixel clock(MHz)
VGA(60Hz) 640x480
3.8
1.9
25.4
0.6
25
VGA(85Hz) 640x480
1.6
2.2
17.8
1.6
36
SVGA(60Hz) 800x600
3.2
2.2
20
1 40
SVGA(75Hz) 800x600
1.6
3.2
16.2
0.3
49
SVGA(85Hz) 800x600
1.1
2.7
14.2
0.6
56
XGA(60Hz) 1024x768
2.1
2.5
15.8
0.4
65
XGA(70Hz) 1024x768
1.8
1.9
13.7
0.3
75
XGA(85Hz) 1024x768
1.0
2.2
10.8
0.5
95
1280x1024(60Hz)
1280x1024
1.0 2.3 11.9 0.4
108
Table 3-16 VGA Vertical Timing Specification
VGA mode
Vertical Timing Spec
Configuration
Resolution(HxV)
a(lines)
b(lines)
c(lines)
d(lines) Pixel clock(MHz)
VGA(60Hz)
640x480
2 33 480 10
25
VGA(85Hz) 640x480
3
25
480
1 36
SVGA(60Hz) 800x600
4
23
600
1 40
SVGA(75Hz) 800x600
3
21
600
1 49
SVGA(85Hz) 800x600
3
27
600
1 56
XGA(60Hz) 1024x768
6
29
768
3 65
XGA(70Hz) 1024x768
6
29
768
3 75
XGA(85Hz) 1024x768
3
36
768
1 95
1280x1024(60Hz) 1280x1024 3 38
1024
1
108