A11
Video Memory Modes
Factory Preset Timing Signal Chart
Video
Sync
B
A
C
F
D
E
H
O
R
I
Z
O
N
T
A
L
V
E
R
T
I
C
A
L
Mode1
Mode2
Mode3
Mode4
Mode5
Symbol
Polarity
-
-
-
+
-
Frequency
kHz
31.47
31.469
37.5
46.875
48.36
Total Period
uS
31.78
31.778
26.667
21.333
20.677
E
Data Period
uS
25.420
25.422
20.317
16.162
15.754
A
Blanking
uS
6.360
6.356
6.35
5.171
4.923
B
Front Porch
uS
0.640
0.636
0.508
0.323
0.369
C
Pulse Width
uS
3.810
3.813
2.032
1.616
2.092
D
Back Porch
uS
1.910
1.907
3.81
3.232
2.462
F
Polarity
+
-
-
+
-
Frequency
Hz
70.08
59.940
75.0
75.0
60.0
Total Period
mS
14.268
16.683
13.333
13.333
16.666
E
Data Period
mS
12.711
15.253
12.80
12.80
15.880
A
Blanking
mS
1.557
1.430
0.533
0.533
0.786
B
Front Porch mS
0.413
0.318
0.026
0.021
0.062
C
Pulse Width mS
0.064
0.064
0.08
0.064
0.124
D
Back Porch
mS
1.08
1.048
0.427
0.448
0.060
F
Resolution
720
640
640
800
1024
x 400
x 480
x 480
x 600
x 768
Recall
YES
YES
YES
YES
YES
