AL128 データシートの表示（PDF） - Unspecified

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AL128

Plug and Play VGA to NTSC/PAL Converter

Unspecified 

AL128

AL128 Plug and Play VGA to NTSC/PAL Converter

1.0 Features

• Convert non-interlaced VGA or Macintosh

video into interlaced TV format (NTSC/PAL)

• Analog RGB output for SCART interface

• Highly integrated design with built-in

NTSC/PAL encoder, ADC, DAC and SRAM

• Broadcast TV quality

• High clarity 5-line anti-flicker filter

• 8 levels of sharpness control

• Plug and play with no need for software or

micro-controller

• Supports up to full 1024x768 VGA resolution

• Automatically supports scan rate from 50 Hz

up to 100 Hz

• Linear vertical and horizontal overscan/

underscan control

• Zoom and freeze controls

• Four-touch-button interface with on-screen-

menu (on TV) to control all key functions

• Horizontal and vertical position centering

control

• Optional digital 24-bit RGB/VAFC interface

for best quality

• Power down feature controlled by software or

hardware

• Full programmability via I2C interface

• Picture panning control

• Brightness control

• Built-in color bar

• Simultaneous display on PC and TV monitors

• Single 5-volt support

• Thin, small LQFP package for PCMCIA or

notebooks. 28x28 PQFP available upon request

Field Memory

ADEN

Digital R, G, B

R

G

B

VRT

VRB

GCLK

GHSDIV

GHSYNC

GVSYNC

Memory

Management

Unit

8-bit

ADC

8-bit

ADC

8-bit

ADC

MUX

Timing

Generating

Digital

Video

Processor

Video

Memory

I2C

2

C

Interface

Memory

Configuration

Setup

9-bit

Digital

DAC

TV

Encoder

9-bit

DAC

9-bit

DAC

Push Button

Interface

ACMP / R

AY / G

AC / B

RSET

VREF

COMP

AL128-01

April 2, 1999

3

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