found on the manufacturer's web site, or in the Datasheet/VGA DAC folder on the
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 |
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Configuration | Resolution(HxV) | a(us) | b(us) | c(us) | d(us) | Pixel clock(Mhz) | |
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VGA(60Hz) | 640x480 | 3.8 | 1.9 | 25.4 | 0.6 | 25 | (640/c) |
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VGA(85Hz) | 640x480 | 1.6 | 2.2 | 17.8 | 1.6 | 36 | (640/c) |
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SVGA(60Hz) | 800x600 | 3.2 | 2.2 | 20 | 1 | 40 | (800/c) |
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SVGA(75Hz) | 800x600 | 1.6 | 3.2 | 16.2 | 0.3 | 49 | (800/c) |
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SVGA(85Hz) | 800x600 | 1.1 | 2.7 | 14.2 | 0.6 | 56 | (800/c) |
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XGA(60Hz) | 1024x768 | 2.1 | 2.5 | 15.8 | 0.4 | 65 | (1024/c) |
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XGA(70Hz) | 1024x768 | 1.8 | 1.9 | 13.7 | 0.3 | 75 | (1024/c) |
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XGA(85Hz) | 1024x768 | 1.0 | 2.2 | 10.8 | 0.5 | 95 | (1024/c) |
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1280x1024(60Hz) | 1280x1024 | 1.0 | 2.3 | 11.9 | 0.4 | 108 | (1280/c) |
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Table 5.9. VGA horizontal timing specification. |
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VGA mode |
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Configuration | Resolution (HxV) | a(lines) | b(lines) | c(lines) | d(lines) |
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VGA(60Hz) | 640x480 | 2 | 33 | 480 | 10 |
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VGA(85Hz) | 640x480 | 3 | 25 | 480 | 1 |
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SVGA(60Hz) | 800x600 | 4 | 23 | 600 | 1 |
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SVGA(75Hz) | 800x600 | 3 | 21 | 600 | 1 |
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SVGA(85Hz) | 800x600 | 3 | 27 | 600 | 1 |
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XGA(60Hz) | 1024x768 | 6 | 29 | 768 | 3 |
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XGA(70Hz) | 1024x768 | 6 | 29 | 768 | 3 |
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XGA(85Hz) | 1024x768 | 3 | 36 | 768 | 1 |
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1280x1024(60Hz) | 1280x1024 | 3 | 38 | 1024 | 1 |
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Table 5.10. VGA vertical timing specification.
46
