(4) Detail of Vertical Timing:
AB
C
D
E
Reset Vertical Counter to Zero
(a) VGA-480 Mode (Vsync = Negative Polarization)
Item
A
B
C
D
E
Description
Vertical Width
Vertical B-Porch
Vertical Display
Vertical F-Porch
Vertical Total
Horizontal Lines
2
33
480
10
525
Time
63.5 µs
1.049 ms
15.253 ms
317.8 µs
16.683 ms
(b) VGA-400 Mode (Vsync = Negative Polarization)
Item
A
B
C
D
E
Description
Vertical Width
Vertical B-Porch
Vertical Display
Vertical F-Porch
Vertical Total
Horizontal Lines
2
35
400
12
449
Time
63.5 µs
1.112 ms
12.711 ms
381.0 µs
14.268 ms
(c) VGA-350 Mode (Vsync = Positive Polarization)
Item
A
B
C
D
E
Description
Vertical Width
Vertical B-Porch
Vertical Display
Vertical F-Porch
Vertical Total
Horizontal Lines
2
60
350
37
449
Time
63.5 µs
1.907 ms
11.122 ms
1.176 µs
14.268 ms
(d) Free Format (Vsync = Positive Polarization)
Item
A
B
C
D
E
Description
Vertical Width
Vertical B-Porch
Vertical Display
Vertical F-Porch
Vertical Total
Horizontal Lines
Note 7-3
Note 7-3
Note 7-3
Note 7-3
< 1024
Time
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T-51382D064J-FW-P-AA (AA) No. 2002-0221
OPTREX CORPORATION
Page 10/24