P
Q
R
S
O
V-parameters
O: Total period
P: Sync.width
Q: Back porch
R: Active video
S: Front porch
Video
Sync
B
C
D
E
A
H-parameters
A: Total period
B: Sync.width
C: Back porch
D: Active video
E: Front porch
2. TIMING CHART
- 13 -
Mode
1
2
3
4
5
6
R
12.711
15.253
11.093
11.179
11.183
12.8
S
0.381
0.318
0.023
0.019
0.015
0.013
Vertical (msec)
@ 70Hz
@ 60Hz
@ 85Hz
@ 85Hz
@ 85Hz
@ 75Hz
640×400
640×480
640×480
800×600
1024×768
1280×1024
fH
(kHz)
31.469
31.469
43.269
53.674
68.677
80.00
fV
(Hz)
70.080
59.940
85.008
85.061
84.997
75.0
Sync polarity
H
N
N
N
P
P
P
V
P
N
N
P
P
P
Q
1.112
1.048
0.578
0.503
0.524
0.475
P
0.064
0.064
0.069
0.056
0.044
0.037
O
14.268
16.683
11.764
11.756
11.765
13.325
E
0.636
0.636
1.556
0.569
0.508
0.11
D
25.422
25.422
17.778
14.222
10.836
9.48
C
1.907
1.907
2.222
2.702
2.201
1.84
Horizontal (µsec)
B
3.813
3.813
1.556
1.138
1.016
1.07
A
31.778
31.778
23.111
18.631
14.561
12.5
Comp
–
–
–
–
–
–
Sync
on
green
–
–
–
–
–
–
VESA Timing Name
