Introduction

Etrons 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.

Features & Applications

Analog RGB input:

■ 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)

Digital RGB inputs

■ 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

Auto detection / Auto adjustment

■ Support for H/V sync interrupt and timing measurement function for mode detection

■ Auto-adjustment functions for frequencies, phases, positions and white-balance

Engine

■ 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

OSD engine

■ 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

Micro-controller interface

■ Support for 8-bit parallel (8051 compatible)/serial host interface

■ PWM outputs for simplified inverter brightness control

Programmable RGB output

■ 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 panels EMI solution

■ Both support 8/6-bit resolution panels

■ Support for single/dual-pixel/clock panel interfaces

Technology / Package

■ 0.25 ugm CMOS technology

■ 160-pin PQFP packaging

Applications

■ Digital/ Analog LCD Monitors

■ Digital/ Analog LCD Projectors

■ LCD TVs

■ Flat Panel Display