Appendix A. Supported resolution timing charts
The following tables are the supported resolution timing charts. Although additional resolutions might work,
these are the supported signals.
Table 7. 640 x 480 timing chart
Type
Standard
Timing name
640 x 480 @ 60 Hz
640 x 480 @ 75 Hz
Horizontal
frequency and
polarity
31.469 kHz
Negative
37.5 kHz
Negative
Vertical
frequency and
polarity
59.94 Hz
Negative
75 Hz
Negative
Pixel clock
25.175 MHz
31.5 MHz
Scan type
Noninterlaced
Noninterlaced
Horizontal
Period
31.778 μs
800 pixels
26.667 μs
840 pixels
Display
25.422 μs
640 pixels
20.317 μs
640 pixels
Blanking
6.356 μs
160 pixels
6.349 μs
200 pixels
Sync
3.813 μs
96 pixels
2.032 μs
64 pixels
Back porch
1.907 μs
48 pixels
3.810 μs
120 pixels
Front porch
0.636 μs
16 pixels
0.508 μs
16 pixels
Vertical
Total
16.683 ms
525 lines
13.333 ms
500 lines
Display
15.253 ms
480 lines
12.800 ms
480 lines
Blanking
1.430 ms
45 lines
0.533 ms
20 lines
Sync
0.064 ms
2 lines
0.080 ms
3 lines
Back porch
1.049 ms
33 lines
0.427 ms
16 lines
Front porch
0.318 ms
10 lines
0.027 ms
1 line
Table 8. 800 x 600 timing chart
Type
Standard
Timing name
800 x 600 @ 60 Hz
800 x 600 @ 75 Hz
Horizontal
frequency and
polarity
37.879 kHz
Positive
46.875 kHz
Positive
Vertical
frequency and
polarity
60.317 Hz
Positive
75 Hz
Positive
© Copyright Lenovo 2015, 2019
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