1.0 Functional Description
CX25870/871
1.3 Device Description
Flicker-Free Video Encoder with Ultrascale Technology
Figure 1-17. Noninterlaced 262-Line (NTSC) Video Timing
START
of
VSYNC
261
262
1
2
3
4
5
6
7
8
9
10
21
FIELD 1
Burst Begins with Positive Half-Cycle
Burst Phase = Reference Phase = 180˚ Relative to B-Y
Burst Begins with Negative Half-Cycle
Burst Phase = Reference Phase = 180˚ Relative to B-Y
100381_012
100381_013
100381_014
Figure 1-18. Noninterlaced 262-Line (PAL-M) Video Timing
START
of
VSYNC
261
262
1
2
3
4
5
6
7
8
9
10
11
12
21
FIELD 1
Burst Begins with Positive Half-Cycle
Burst Phase = Reference Phase = 180˚ Relative to B-Y
Burst Begins with Negative Half-Cycle
Burst Phase = Reference Phase = 180˚ Relative to B-Y
Figure 1-19. Noninterlaced 312-Line (PAL-B, D, G, H, I, N, Nc) Video Timing
RESET*
Start
of
VSYNC
308
309
310 311
312
1
2
3
4
5
6
7
23
24
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
1-50
Conexant
100381B
CONEXANT [ CONEXANT SYSTEMS, INC ]
