Description:

Overview

The CL-GD6440 Super VGA LCD Controller is a single-chip solution designed for high-performance notebook computers, offering high resolution and high performance in a compact, low-power package. This controller is ideal for the next generation of portable computers.

Key Features:

• Single-chip VGA controller with integrated RAMDAC and programmable Frequency Synthesizer
• 65 MHz at 5.0V; 40 MHz at 3.3V
• Direct connections to various buses:
  • 32-bit Local Bus
  • 16-bit Pl Bus, ISA (PC AT) Bus
• Direct connections to various panel types:
  • 8-and 16-bit dual- and single-scan color STN panels
  • 9-, 12-, 15-, and 18-bit color TFT panels
• Supports 1-Mbyte video memory with two 256K x 16 or eight 256K x 4 DRAMS with a 32-bit interface
• Resolutions up to 1280 x 1024 and 1024 x 768 on LCD and CRT
• Simultaneous display on CRT and LCD panel with resolutions up to 1024 x 768 with 256 colors
• Supports 64K direct-color modes on LCD and CRT
• Windows performance-improvement features:
  • Color expansion for 8 and 16 bits per pixel graphics
  • Packed-pixel addressing for 8 and 16 bits per pixel
  • Programmable linear memory addressing
• 3.3 or 5.0V mixed-voltage operation, LVTTL, JEDEG standard 81 compatible
• Standby and Suspend Modes to save power
• Low active power with Frame-Accelerator technology (no additional DRAMs required)
• Flicker-reduction algorithms for 3MHz and higher quick-response (mouse-quick) LCD panels
• IBM VGA-compatible
• Packaged in a 208-pin QFP Package

The CL-GD6440 is designed for direct connection to various processors, enabling significant performance gains. It integrates support for a wide variety of monochrome and color STN/TFT panels and offers features that improve Windows performance. The controller is energy-efficient, designed for 3.3 or 5V operation, and supports mixed-voltage operation. With integrated Frame-Accelerator technology, the CL-GD6440 enables low-power LCD operation while allowing high LCD panel vertical-refresh rates. Additionally, it features SIMUISCAN™, allowing simultaneous CRT and LCD operation, making portable computers a key part of presentation environments.