Signal Timings
Input Signal Timings (WS High Resolution Mode)
Item
Abbreviation
Monitor Rating
Pixel frequency
fc
107.5MHz ± 50ppm
9.302nsec/pixel
107.352HHz ± 50ppm
9.315nsec/pixel
Horizontal frequency
fh
64.60KHz
63.9KHz
Line Time total
Th
15.479usec
1664CLK
15.649esec
1680CLK
Horizontal active display
Thd
11.907usec
1280CLK
11.923usec
1280CLK
Horizontal sync pulse
Thp
1.786usec
192CLK
1.118usec
120CLK
Horizontal baack porch
Thb
1.488usec
160CLK
2.329usec
250CLK
Horizontal front porch
Thf
0.298usec
32CLK
0.279usec
30CLK
H-sync Rise & Fall
Thrf
5ns(max.)
Vertical frequency
fv
59.93Hz
60.0Hz
Frame time total
Tv
16.686msec
1078H
16.667msec
1065H
Vertical active display
Tvd
15.850msec
1024H
16.025msec
1029H
Vertical sync pulse
Tvp
0.062msec
4H
0.047msec
3H
Vertical back porch
Tvb
0.666msec
43H
0.548msec
35H
Vertical front porch
Tvf
0.108msec
7H
0.047msec
3H
IMPORTANT: The Jitter on Hsync output from video card should be less than 300 psec or you may see some jitter on the screen.
Appendix 2
Input Signal Timings (VGA Mode)
(The values of Front & Back porch are for reference only)
Item
Abbreviation
Monitor Rating
Pixel frequency
fc
25.175MHz ± 50ppm 39.72nsec/pixel
Horizontal frequency
fh
31.469KHz
Line Time total
Th
31.778usec
800CLK
Horizontal active display
Thd
25.422usec
640CLK
Horizontal sync pulse
Thp
3.813usec
96CLK
Horizontal back porch
Thb
1.907usec
48CLK
Horizontal front porch
Thf
0.636usec
16CLK
Vertical frequency
fv
59.94Hz
Frame time total
Tv
16.683msec
525H
Vertical active display
Tvd
15.253msec
480H
Vertical sync pulse
Tvp
0.063msec
2H
Vertical back porch
Tvb
1.017msec
32H
Vertical front porch
Tvf
0.350msec
15H
IMPORTANT: The Jitter on Hsync output from video card should be less than 300 psec or you may see some jitter on the screen.
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LCD1280 10/29/99 9:25 AM Page 10
