Daewoo dsc-3220e-3220l Benutzerhandbuch

-18-

4 - IC description
4-1 VCT383XA TV signal processor - Teletext decoder with embedded 8 bit   - Controller.

4-1-1- Block  diagram of the VCT

4-1-2- TV-signal Processor
  Four composite video inputs, two S-VHS inputs
  Analogue YC r C b input
  Composite video monitor
  Multistandard colour decoder ( 1 crystal )
  Multistandard sync decoder
  Black-line detector
  Adaptive 2H comb filter Y/C separator

VIN

VR

T

SGND

VSUP

AF

GNDAF

VSUPD

GNDD

VER

T

EW

PROT

HOUT

HFLB

SENSE

RSW

GNDM

VRD

XREF

Video

Front-end

Comb

Filter

Color

Decoder

Panorama

Scaler

Display

Processor

Pict. Improv

Video

Back-end

Audio

CIN

VOUT

4

2

2

2

3

4

2

2

3

3

RGBOUT

SVM

RGBIN

VSUPAB
GNDAB
AOUT

AIN

I

2

C

I

2

C Master

I

2

C

MSync

Color, Prio

VSync

8-bit PWM

14-bit PWM

15:1 Mux

10-bit ACD

2 Timer

2 CapCom

96 kB

CPU ROM

ADB, DB, CB

16 kB

Text

RAM

3 kB

OSD RAM

TPU

V

ideo

24 kB ROM

31

12

1 kB

CPU RAM

CPU

DMA

8

BE

RDY

Watchdog

24 IO Ports

RESQ

TEST

XTAL1

XTAL2

CLK20

CNDP1

VSUPP1

Pxy

GNDS

VSUPS

Clock

Oscillator

Reset

Logic

VCT 38xx