- 7 -
2-3 TIMING CHART
DESCRPTION
IGT
VESA
640*480
640*480
640*480
640*480
1024*768
800*600
1024*768
H
f KHz
31.469
31.469
31.469
37.860
48.363
53.674
60. 24
A
uS
31.8
31.8
31. 77
26.413
20.677
18.631
16. 60
B
uS
2. 4
2. 4
3.813
1.270
2.092
1.138
1.200
C
uS
3. 0
3. 0
1.906
4.603
2.262
2.702
2.20
D
uS
24.0
24.0
25. 42
20.317
15.754
14.222
12. 80
E
uS
2. 4
2. 4
0.636
0.762
0.369
0.569
0. 4
POL.
PO S
PO S
NEG
PO S
NEG
PO S
NEG
V
f
Hz
50.0
59.940
59. 94
72.809
60. 00
85.061
74. 93
O
mS
20.000
16.663
16.683
13.735
16.667
11.756
13.346
P
mS
0.509
0.254
0.064
0.079
0.124
0.056
0.05
Q
mS
0.372
0.890
1.048
0.740
0.60
0.503
0.497
R
mS
15. 26
15. 26
15.253
12.678
15. 88
11.179
12.749
S
mS
0.509
0.890
0.318
0.238
0.062
0.019
0.050
POL.
PO S
PO S
NEG
PO S
NEG
PO S
NEG
VIDEO
SYNC
HORIZONTAL
VERTICAL
A
B
C
D
E
O
P
Q
R
S
A : LINE TIME TOTAL
B :HORIZONTAL SYNC WIDTH
C : BACK PORCH
D : ACTIVE TIME
E : FRONT PORCH
O : FRAME TIME TOTAL
P : VERTICAL SYNC WIDTH
Q : BACK PORCH
R : ACTIVE TIME
S : FRONT PORCH