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8. Timing Charts
SEPARATE SYNC.
HORIZONTAL
VERTICAL
Sync. Polarity: Positive/Negative
PRESET TIMING-VGA/SVGA
Fh (KHz)
A µs (Line time total)
B µs (Synch. pulse)
C µs (Back porch)
D µs (Active)
E µs (Front porch)
Fv (Hz)
P ms (Frame time total)
Q ms (Synch. pulse)
R ms (Back porch)
S ms (Active)
T ms (Front porch)
H. Sync. Polarity
V. Sync. Polarity
640x350
31.468
31.778
3.813
1.907
25.423
0.636
70.000
14.286
0.063
1.937
11.111
1.175
Separate
Sync.
Positive
Negative
No
VGA
720x400
31.468
31.778
3.813
1.907
25.423
0.636
70.000
14.286
0.063
1.143
12.698
0.381
Separate
Sync.
Negative
Positive
No
-11-
640x480 800x600 800x600
31.469 35.156 37.879
31.778 28.445 26.400
3.813 2.000
3.200
1.907
3.556 2.200
25.422 22.222 20.000
0.636 0.667
1 .000
59.940 56.250 60.317
16.683
17.778 16.579
0.064 0.057
0.106
1.049
0.626
0.607
15.253 17.067 15.840
0.318 0.028
0.026
Separate Separate
Separate
Sync. Sync. Sync.
Negative
Negative Positive
Negative Negative Positive
No
No No
SVGA