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BT864AKPF

YCrCb to NTSC/PAL Digital Video Encoder

Conexant Systems 

Bt864A/865A

YCrCb to NTSC/PAL Digital Video Encoder

Figure 1-5. Interlaced 525-Line (PAL-M) Video Timing

Analog

FIELD 1

RESET*

1.0 Circuit Description

1.5 Video Timing

VSYNC*

523 524 525 1

2

3

4

5

6

7

8

9 10 11 12

22

Burst Phase

Analog

FIELD 2

261 262 263 264 265 266 267 268 269 270 271 272 273 274

285

Analog

FIELD 3

523 524 525 1

2

3

4

5

6

7

8

9 10 11 12

22

Burst Phase

Analog

FIELD 4

261 262 263 264 265 266 267 268 269 270 271 272 273 274

285

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

NOTE(S): SMPTE line numbering convention rather than ITU-R BT.470-3 is used. EVBI = 0.

100138B

Conexant

1-9

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