STV0056A 查看數據表（PDF） - STMicroelectronics

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STV0056A

SATELLITE SOUND AND VIDEO PROCESSOR

STMicroelectronics 

STV0056A

GENERAL BLOCK DIAGRAM

From Tuner

From TV,

VCR/De code r

From Tuner

22kHz to LNB

B-BAND 2

Vide o

P roce ss ing

4

2

FM

Demodulation

2 Cha nne ls

We ge ne r

Panda +

De empha s is

S TV0056 A

6 x3

3

Vide o

Ma trix

Audio

Ma trix

3

+

Volume

I2C Bus

Inte rface

To TV, VCR/De code r

Active in S ta nd-by

VIDEO PROCESSING BLOCK DIAGRAM

I/O/22kHz 29

B-BAND IN 20

LPF

NTSC

PAL

VIDEEM2/22kHz

16

VIDEEM1 UNCL DEEM

18

15

22kHz

TONE

G

±1

Baseband

Deemphasized

2

CLAMP IN

13 CLAMP

S3 VID RTN

5 CLAMP

S2 VID RTN 11 CLAMP

S1 VID RTN

4 CLAMP

STV00 56A

Normal

Decoder Return

VCR Return

TV Return

BLACK LEVEL

ADJUST

789

S3 VID OUT

S2 VID OUT

To Decoder

To VCR

To TV

6/26

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