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VGA Signal 640 x 480 @ 73 Hz timing

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General timing

Screen refresh rate 73 Hz
Vertical refresh 37.860576923077 kHz
Pixel freq. 31.5 MHz

Horizontal timing (line)

Polarity of horizontal sync pulse is negative.

Scanline part Pixels Time [µs]
Visible area 640 20.31746031746
Front porch 24 0.76190476190476
Sync pulse 40 1.2698412698413
Back porch 128 4.0634920634921
Whole line 832 26.412698412698

Vertical timing (frame)

Polarity of vertical sync pulse is negative.

Frame part Lines Time [ms]
Visible area 480 12.678095238095
Front porch 9 0.23771428571429
Sync pulse 2 0.052825396825397
Back porch 29 0.76596825396825
Whole frame 520 13.734603174603

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