BT856 View Datasheet(PDF) - Unspecified

Part Name

Description

Manufacturer

BT856

YCrCb or RGB to NTSC/PAL Digital Video Encoder

Unspecified 

CIRCUIT DESCRIPTION

Video Timing

Figure 5. Noninterlaced 262-Line (NTSC, PAL-M) Video Timing

RESET*

Start

of

VSYNC

Bt856/7

258 259 260 261 262 1

2

34

5

6

7

18

258 259 260 261 262 1

2

34

5

6

7

18

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 6. Noninterlaced 312-Line (PAL–B, D, G, H, I, N, N-Argentina) Video Timing

RESET*

Start

of

VSYNC

308 309 310 311 312

1

23

4

5

6

7

23 24

308 309 310 311 312

1

23

4

5

6

7

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

23 24

10

Brooktree®

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