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