Appendix A — Video Timing
Table 8 Video Monitor Timing II
Frequency
Switch Setting
8
9
A
B
C
D
E
F
Pixel Clock
Frequency
65.00000 50.00000 40.00000 31.50000 25.17500 135.268
110.00
202.50
X Addressability
1024
800
800
640
640
1280
1280
1600
Y Addressability
768
600
600
480
480
1024
1024
1200
Vertical Refresh
(Hz)
60
72
60
72
60
75
60
75
Horizontal
Frequency (KHz)
48.36
48.08
37.88
37.86
31.47
82.08
–
93.75
Horizontal Front
Porch (
s)
0.86
1.12
1.00
0.76
0.64
0.591
–
0.158
H. Synchronous
Time (
s)
0.99
2.40
3.20
1.27
3.81
0.946
–
0.948
H. Back Porch
(
s)
3.08
1.28
2.20
4.06
1.91
1.183
–
1.659
H. Blanking (
s)
4.92
4.80
6.40
6.10
6.36
2.7205
–
–
H. Period (
s)
20.68
20.80
26.40
26.41
31.77
12.163
–
–
H. Active (
s)
15.75
16.00
20.00
20.32
25.42
9.4627
–
–
V. Front Porch
(
s)
0.15
0.77
0.03
0.24
0.32
0.001
–
0.011
V. Synchronous
Time (
s)
0.19
0.13
0.11
0.08
0.06
0.0487
–
0.032
V. Back Porch
(ms)
0.54
0.48
0.61
0.74
1.05
0.6335
–
0.491
V. Blanking (ms)
0.87
1.37
0.74
1.06
1.43
0.6823
–
–
V. Active (ms)
15.88
12.48
15.84
12.68
15.25
12.4756
–
–
V. Period (ms)
16.75
13.85
16.58
13.74
16.68
13.1579
–
–
Pixel Period (ns)
15.38
20.00
25.00
31.75
39.72
–
–
–
19
