SXGA (Mode 101) Signal 640 x 480 @ 85 Hz timing

General timing

Screen refresh rate	85 Hz
Vertical refresh	43.269230769231 kHz
Pixel freq.	36.0 MHz

Horizontal timing (line)

Polarity of horizontal sync pulse is negative.

Scanline part	Pixels	Time [µs]
Visible area	640	17.777777777778
Front porch	56	1.5555555555556
Sync pulse	56	1.5555555555556
Back porch	80	2.2222222222222
Whole line	832	23.111111111111

Vertical timing (frame)

Polarity of vertical sync pulse is negative.

Frame part	Lines	Time [ms]
Visible area	480	11.093333333333
Front porch	1	0.023111111111111
Sync pulse	3	0.069333333333333
Back porch	25	0.57777777777778
Whole frame	509	11.763555555556