Table 5.9. vga horizontal timing specification, Table 5.10. vga vertical timing specification – SIGMA DE2-70 User Manual
Page 49
DE2-70 User Manual
46
found on the manufacturer's web site, or in the Datasheet/VGA DAC folder on the DE2-70 System
CD-ROM. The pin assignments between the Cyclone II FPGA and the ADV7123 are listed in Table
5.11. An example of code that drives a VGA display is described in Sections 6.2, 6.3 and 6.4.
Figure 5.13. 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 (640/c)
VGA(85Hz)
640x480
1.6
2.2
17.8
1.6
36 (640/c)
SVGA(60Hz)
800x600
3.2
2.2
20
1
40 (800/c)
SVGA(75Hz)
800x600
1.6
3.2
16.2
0.3
49 (800/c)
SVGA(85Hz)
800x600
1.1
2.7
14.2
0.6
56 (800/c)
XGA(60Hz)
1024x768
2.1
2.5
15.8
0.4
65 (1024/c)
XGA(70Hz)
1024x768
1.8
1.9
13.7
0.3
75 (1024/c)
XGA(85Hz)
1024x768
1.0
2.2
10.8
0.5
95 (1024/c)
1280x1024(60Hz)
1280x1024
1.0
2.3
11.9
0.4
108 (1280/c)
Table 5.9. VGA horizontal timing specification.
VGA mode
Vertical Timing Spec
Configuration
Resolution (HxV)
a(lines)
b(lines)
c(lines)
d(lines)
VGA(60Hz) 640x480 2
33
480
10
VGA(85Hz) 640x480 3
25
480
1
SVGA(60Hz) 800x600 4
23
600
1
SVGA(75Hz) 800x600 3
21
600
1
SVGA(85Hz) 800x600 3
27
600
1
XGA(60Hz) 1024x768 6
29
768
3
XGA(70Hz) 1024x768 6
29
768
3
XGA(85Hz) 1024x768 3
36
768
1
1280x1024(60Hz) 1280x1024
3 38 1024 1
Table 5.10. VGA vertical timing specification.