Figure 3a. Interlaced 625-Line (PAL) Video Timing
SPCA711A
Start
of
VSYNC
Analog
Field 1
620 621 622 623 624 625 1
2
3
4
5
6
7
-U Phase
Analog
Field 2
308 309 310 311 312 313 314 315 316 317 318 319 320
22 23 24
336 337
Analog
Field 3
620 621 622 623 624 625 1
2
3
4
5
6
7
Analog
Field 4
308 309 310 311 312 313 314 315 316 317 318 319 320
Burst
Blanking
Intervals
Field One
Field Two
Field Three
Field Four
Burst Phase = Reference Phase = 1350 Relative to U
PAL Switch = 0, + V Component
Burst Phase = Reference Phase + 900 = 2250 Relative to U
PAL Switch = 1, -V Component
22
23 24
336 337