(3). Detail of Horizontal Timing :
AB
C
D
E
Reset Horizontal Counter to Zero
(a) VGA-480 Mode (Hsync = Negative Polarization)
Item
A
B
C
D
E
Description
Horizontal Width
Horizontal B-Porch
Horizontal Display
Horizontal F-Porch
Horizontal Total
Clock Cycles
96
48
640
16
800
(b) VGA-400 Mode (Hsync = Negative Polarization)
Item
A
B
C
D
E
Description
Horizontal Width
Horizontal B-Porch
Horizontal Display
Horizontal F-Porch
Horizontal Total
Clock Cycles
96
48
640
16
800
(c) VGA-350 Mode (Hsync = Positive Polarization)
Item
A
B
C
D
E
Description
Horizontal Width
Horizontal B-Porch
Horizontal Display
Horizontal F-Porch
Horizontal Total
Clock Cycles
96
48
640
16
800
(d) Free Format (Hsync = Positive Polarization)
Item
A
B
C
D
E
Description
Horizontal Width
Horizontal B-Porch
Horizontal Display
Horizontal F-Porch
Horizontal Total
Clock Cycles
Note 7-3
Note 7-3
Note 7-3
Note 7-3
< 1024
Time
3.813 µs
1.907 µs
25.422 µs
0.636 µs
31.778 µs
Time
3.813 µs
1.907 µs
25.422 µs
0.636 µs
31.778 µs
Time
3.813 µs
1.907 µs
25.422 µs
0.636 µs
31.778 µs
Time
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T-51382D064J-FW-P-AC (AC) No. 2002-0168
OPTREX CORPORATION
Page 9/24