sohotcall

VGA Video Timing

Sep 9th, 2021
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  1. VGA VIDEO TIMING
  2. (from https://projectf.io/posts/video-timings-vga-720p-1080p/)
  3. Name 640x480p60 800x600p60 1280x720p60 1920x1080p60
  4. Standard Historical VESA DMT CTA-770.3 SMPTE 274M
  5. VIC 1 N/A 4 16
  6. Short Name DMT0659 N/A 720p 1080p
  7. Aspect Ratio 4:3 4:3 16:9 16:9
  8.  
  9. Pixel Clock (MHz) 25.175 40.000 74.250 148.5
  10. TMDS Clock (MHz) 251.750 400.000 742.500 1,485.0
  11. Pixel Time (ns±0.5%) 39.7 25.0 13.5 6.7
  12. Horizontal Freq. (kHz) 31.469 37.897 45.000 67.500
  13. Line Time (µs) 31.8 26.4 22.2 14.8
  14. Vertical Freq. (Hz) 59.940 60.317 60.000 60.000
  15. Frame Time (ms) 16.7 16.6 16.7 16.7
  16.  
  17. Horizontal Timings
  18. Active Pixels 640 800 1280 1920
  19. Front Porch 16 40 110 88
  20. Sync Width 96 128 40 44
  21. Back Porch 48 88 220 148
  22. Blanking Total 160 256 370 280
  23. Total Pixels 800 1056 1650 2200
  24. Sync Polarity neg pos pos pos
  25.  
  26. Vertical Timings
  27. Active Lines 480 600 720 1080
  28. Front Porch 10 1 5 4
  29. Sync Width 2 4 5 5
  30. Back Porch 33 23 20 36
  31. Blanking Total 45 28 30 45
  32. Total Lines 525 628 750 1125
  33. Sync Polarity neg pos pos pos
  34.  
  35. Active Pixels 307,200 480,000 921,600 2,073,600
  36. Data Rate (Gbps) 0.60 0.90 1.78 3.56
  37.  
  38. Frame Memory (Kbits)
  39. 8-bit Memory 2,400 3,750 7,200 16,200
  40. 12-bit Memory 3,600 5,625 10,800 24,300
  41. 24-bit Memory 7,200 11,250 21,600 48,600
  42. 32-bit Memory 9,600 15,000 28,800 64,800
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