STV0042 Ver la hoja de datos (PDF) - STMicroelectronics

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STV0042

SATELLITE SOUND AND VIDEO PROCESSORS

STMicroelectronics 

GENERAL BLOCK DIAGRAM

STV0042A

From Tuner

From

VCR/Decoder

From Tuner

22kHz to LNB

B-BAND 2

Video

Processing

2

1

FM

Demodulation

2 Channels

Noise

Reduction +

Deemphasis

STV0042A

4x2

2

Video

Matrix

Audio

Matrix

2

+

Volume

I2C Bus

Interface

To TV, VCR/Decoder

Active in Stand-by

VIDEO PROCESSING BLOCK DIAGRAM

LPF

NTSC

PAL

VIDEEM2/22kHz

13

VIDEEM1 UNCL DEEM

15

12

22kHz

TONE

B-BAND IN 17

G

±1

Baseband

CLAMP IN

10 CLAMP

S2 VID RTN

8 CLAMP

Normal

VCR / Decoder Return

Deemphasized

÷2

STV0042A

6

S2 VID OUT

To Decoder or VCR

5

S1 VID OUT

To TV

5/24

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