Overview
The gmZAN3 is a graphics processing IC for Liquid Crystal Display (LCD) monitors at XGA resolution. It provides all key IC functions required for the highest quality LCD monitors. On-chip functions include a high-speed triple-ADC and PLL, a high quality zoom and shrink scaling engine, an on-screen display (OSD) controller and digital color controls.

gmZAN3 Features
FEATURE OVERVIEW
• Zoom (from VGA) and shrink (from SXGA) scaling
• Integrated 8-bit triple-channel ADC / PLL
• Csync and SOG support
• On-chip versatile OSD engine
• All system clocks synthesized from a single external crystal
• On-chip reset circuit
• Programmable gamma correction (CLUT)
• PWM back light intensity control
• 5-Volt tolerant inputs – up to 13 GPIO pins
• Low EMI and power saving features

High-Quality Advanced Scaling
• Fully programmable zoom ratios
• Shrink capability from SXGA resolution
• Real Recovery™ function provides full color recovery image for refresh rates higher than those supported by the LCD panel

Analog RGB Input Port
• Supports up to SXGA input
• On-chip high-performance PLLs (only a single reference crystal required)

Auto-Configuration / Auto-Detection
• Automatic input format detection
• Robust phase and image positioning

On-Chip OSD Controller
• On-chip RAM for downloadable menus
• 1 and 2-bit per pixel character cells
• Horizontal and vertical stretch of OSD menus
• Blinking and transparency
• Proportional font support
• 90 degree rotation of fonts for Portrait Display support

Built in Test Pattern Generator
• Simplifies manufacturing and testing

Highly Integrated Solution to Provide Low System Cost
• Two layer PCB support
• On-chip reset feature to eliminate external reset component
• Output slew rate control
• Integrated Schmitt trigger for Vsync and Hsync

OUTPUT INTERFACE
gmZAN3T
• Support for 8 or 6-bit panels (with high-quality dithering)
• Swap red and green channels
• Ability to reverse bit order of each R, G, B output
• Single or double pixel clock
• Support up to XGA 85Hz

Built in Flexible LVDS Transmitter for gmZAN3L
• Four channel 6/8-bit LVDS transmitter (with high-quality dithering)
• Programmable channel swapping and polarity
• Support up to XGA 85Hz output