EL7301

Introduction

Figure : EL7301 system block diagram application in dual interface

The EL7301 captures input RGB graphics signals directly through the use of the internal PLLs. Such

signals will then be converted to 8-bit digital data per channel. The output frequencies range is up to

the resolution of SXGA with very small jitter (typically equal to 800ps). Such advantage surely

provides high degree of flexibility and display quality for users while setting different level of

resolution

Etron's EL7301 is the key graphics processing IC that enable liquid Crystal Display (LCD) monitor at

SVGA, XGA and SXGA TFT-LCD resolution. This single chip solution included a triple-channel ADC,

two PLL circuits, one internal On Screen Display (OSD), sophisticated filter and the most advanced

scaling engine. The digital or video input can also be supported via analog/digital input ports that

implemented in EL7301.

Video

Decoder

VD[23:0]

NTSC/PAL/

SECAM

R/G/B

H-sync/V-sync

Triple

ADC

PLL

PD[47:0]

PHS/PVS/PDE

PCLK0

PCLK1

MPU

Optional

External

OSD

AD[7:0]

Controls

R/G/B

25 MHz

X'tal

X'tal_I

De-

interlacer

EL7301

Core

TFT

Panel

Host

I/F

OSD

SoG

Processor

DVS/DHS

DDE/DCLK

EL7301

Features & Applications

Analog RGB input:

Digital RGB inputs

Auto detection / Auto adjustment

Engine

Integrated three channel 8-bit resolution ADCs and pre-amplifiers for analog-RGB up to SXGA 1280

*1024 @ 75Hz

On-chip high performance PLLs

Sync on Green (SoG)

Additional data port support digital or video data input
DVI digital input single 24-bit RGB pixel up to 135 MHz
Video display through digital input port
De-interlace function for video signal
5V-tolerance input pads

Support for H/V sync interrupt and timing measurement function for mode detection
Auto-adjustment functions for frequencies, phases, positions and white-balance

Advanced scaling algorithm for excellent image quality
Programmable independent horizontal/vertical expansion zooming engine for scaling up and
scaling down
Support for Fidelity mode without frame buffers required.
Specialized adaptive filters for crisp images
On-chip digital brightness, contrast and per color 10-bit gamma table adjustment
Two-dimension dithering function
Support for dithering function for 6-bit panels
Provide 16 build-in test pattern for system burn-in testing purpose

EL7301

OSD engine

Micro-controller interface

Programmable RGB output

Technology / Package

Applications

On-chip OSD engine with a 128K-bit fully programmable bit-map memory, resolution up to

32K pixels/16-color format

Support for optional external OSD

Support for 8-bit parallel (8051 compatible)/serial host interface
PWM outputs for simplified inverter brightness control

Resolution up to 1280x1024 (SXGA).
Available for SVGA , XGA & SXGA TFT-LCD panels
Single/dual-pixel digital RGB output
Staggered data output
Pixel clocks inverse and delay adjustment
Driving current programmable to simplify EMI design
Spread spectrum to disturb clock period for panel's EMI solution
Both support 8/6-bit resolution panels
Support for single/dual-pixel/clock panel interfaces

0.25 gm CMOS technology
160-pin PQFP packaging

Digital/ Analog LCD Monitors
Digital/ Analog LCD Projectors
LCD TVs
Flat Panel Display

Электронный компонент: EL7301