BT856 View Datasheet(PDF) - Unspecified

Part Name

Description

Manufacturer

BT856

YCrCb or RGB to NTSC/PAL Digital Video Encoder

Unspecified 

CIRCUIT DESCRIPTION

Video Timing

Bt856/7

Figure 4a. Interlaced 625-Line (PAL–B, D, G, H, I, N, N-Argentina) Video Timing

Start

of

VSYNC

Analog

Field 1

620 621 622 623 624 625 1

2

3

4

– U PHASE

Analog

Field 2

567

23 24

308 309 310 311 312 313 314 315 316 317 318 319 320

Analog

Field 3

336 337

620 621 622 623 624 625 1

2

3

4

5

67

Analog

Field 4

23 24

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 = 135˚ Relative to U

PAL Switch = 0, +V Component

Burst Phase = Reference Phase + 90˚ = 225˚ Relative to U

PAL Switch = 1, –V Component

336 337

8

Brooktree®

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