Preset Timing Chart & Reference Timing Table
Model no. | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
Model name | EGA/70 | EGA/85 | VGA | VGA | VGA | VGA | VESA |
Horizontal dots | 640 | 640 | 640 | 640 | 640 | 640 | 800 |
Vertical lines | 350 | 350 | 480 | 480 | 480 | 480 | 600 |
Pixel clock (mhz) | 25.175 | 31.5 | 25.175 | 31.5 | 31.50 | 36 | 36 |
Horizontal freq | 31.469 | 37.861 | 31.469 | 37.861 | 37.5 | 43.269 | 35.156 |
(khz) |
|
|
|
|
|
|
|
Sync. Polarity | + | + | - | - | - | - | + |
A h.total (us) | 31.778 | (832) | 31.778 | 832 | 26.667 | 23.111 | 1024 |
(pixels) | (800) |
| (800) |
| (840) | (832) |
|
B h.sync | 3.813 | (64) | 3.813 | 40 | 2.032 | 1.556 | 72 |
(us)(pixels) | (96) |
| (96) |
| (64) | (56) |
|
C h.back porch | 1.907 | (96) | 1.907 | 128 | 3.810 | 2.222 | 128 |
(us) (pixels) | (48) |
| (48) |
| (120) | (80) |
|
D h.active | 25.422 | (640) | 25.422 | 640 | 20.317 | 17.778 | 800 |
(us) (pixels) | (640) |
| (640) |
| (640) | (640) |
|
E h.front porch | (16) | (32) | 0.318 | 24 | 0.508 | 1.556 | 24 |
(us) (pixels) |
|
| (16) |
| (16) | (56) |
|
Vertical freq (hz) | 70.087 | 85.08 | 59.94 | 72.809 | 75 | 85.008 | 56.25 |
Sync. Polarity | - | - | - | - | - | - | + |
O v.total (ms) | 14.268 | (445) | 16.684 | 520 | 13.333 | 11.764 | 625 |
(lines) | (449) |
| (525) |
| (500) | (509) |
|
P v.sync | 0.064 | (3) | 0.064 | 3 | 0.080 | 0.069 | 2 |
(ms) (lines) | (2) |
| (2) |
| (3) | (3) |
|
Q v.back porch | 1.112 | (60) | 1.048 | 28 | 0.427 | 0.578 | 22 |
(ms) (lines) | (60) |
| (33) |
| (16) | (25) |
|
R v.active (ms) | 11.122 | (350) | 15.254 | 480 | 12.800 | 11.093 | 600 |
(lines) | (350) |
| (480) |
| (480) | (480) |
|
S v.front porch | 0.222 | (32) | 0.318 | 9 | 0.027 | 0.023 | 1 |
(ms) (lines) | (37) |
| (10) |
| (1) | (1) |
|