1.0 Functional Description
CX25870/871
1.3 Device Description
Flicker-Free Video Encoder with Ultrascale Technology
Figure 1-13. Interlaced 625-Line (PAL-B, D, G, H, I, Nc) Video Timing (Fields 1–4)
RESET*
Start
of
VSYNC
Analog
FIELD 1
620
621
622
623
624
625
1
2
3
4
5
6
7
23
24
– U PHASE
Analog
FIELD 2
308
309
310
311
312
313
314
315
316
317
318
319
320
336
337
Analog
FIELD 3
620
621
622
623
624
625
1
2
3
4
5
6
7
23
24
Analog
FIELD 4
308
309
310
311
312
313
314
315
316
317
318
319
320
336
337
FIELD One
FIELD Two
Burst
Blanking
Intervals
FIELD Three
FIELD Four
Burst Phase = Reference Phase = 135˚ Relative to U
PAL Switch = 0, +V Component
Burst Phase = Reference Phase + 90˚ = 225˚ Relative to U
PAL Switch = 1, –V Component
100381_008
1-46
Conexant
100381B