Daewoo DTJ - 28A6F Service Manual download pdf (Page 17)

5-2. VPS 3215C(Video Processor)

(3) Block Diagram

(4) Pin Descriptions

IC description

(1) Description

The VPC 3215C is a high-quality, single-chip video front-

end, which is targeted for 4:3 and 16:9, 100/120Hz TV

sets.

It can be conbined with other members of the DIGIT3000

IC family (such as CIP 3250A, DDP 3300A, TPU 3040)

and/or it can be used with 3rd-party products.

(2) Features

- all-digital video processing

- high-performance adaptive 4H comb filter Y/C separator

with adjustable vertical peaking

- multi-standard color decoder PAL/NTSC/SECAM

including all substandards

- 4 composite, 1 S-VHS input, 1 composite output

- integrated high-quality A/D converters and associated

clamp and AGC circuits

- multi-standard sync processing

- linear horizontal scaling (0.25 ... 4), as well as non-linear

horizontal scaling ‘panorama vision’

- PAL + preprocessing (VPC 3215)

- submicron CMOS technology

Pin 1 - Ground, Analog Front-End GND

Pin 2 - Ground, Analog Front-End GND

Pin 3 - CCU 5 MHz Clock Output CLK5

This pin provides a clock frequency for the TV microcon-

troller, e.g. a CCU 3000 controller, It is also used by the

DDP 3300A display controller as a standby clock.

Pin 4 - Standby Supply Voltage V

In standby mode, only the clock oscillator is active, GND

should be ground reference. Please activate RESQ before

powering-up other supplies Pins 6 and 5-XTAL1 Crystal

Input

STDBY

These pins are connected to an 20.25MHz crystal oscilla-

tor which is digitally tuned by integrated shunt capaci-

tances. The CLK20 and CLK5 clock signals are derived

from this oscillator. An external clock can be fed into

XTAL1. In this case, clock frequency adjustment must be

switched off.

Pin 7 - Ground, Analog Front-End GND

Pin 9 - Ground, Output Pad Circuitry GND

Pin 10 - Interlace Output, INTLC

This pin supplies the interlace information, 0 indicates first

field, 1 indicates second field.

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 53 54

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Daewoo DTJ - 28A6F Service Manual Page 17

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