"VGA industry standard" 640x480 pixel mode

General characteristics

Clock frequency 25.175 MHz
Line  frequency 31469 Hz
Field frequency 59.94 Hz

One line

  8 pixels front porch
 96 pixels horizontal sync
 40 pixels back porch
  8 pixels left border
640 pixels video
  8 pixels right border
---
800 pixels total per line

One field

  2 lines front porch
  2 lines vertical sync
 25 lines back porch
  8 lines top border
480 lines video
  8 lines bottom border
---
525 lines total per field              

Other details

Sync polarity: H negative, V negative
Scan type: non interlaced.