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CL-GD610

Part Number	CL-GD610
Manufacturer	Cirrus Logic
Description	VGA Controller
Published	Feb 20, 2020
Detailed Description	PRELIMINARY DATA SHEET July,"" 1989 FEATURES • Direct interface to dual-line, dual panel LCDs • Full backwards compatib...
Datasheet	CL-GD610 PDF File

Overview

PRELIMINARY DATA SHEET July,"" 1989 FEATURES • Direct interface to dual-line, dual panel LCDs • Full backwards compatibility at the hardware level • 256 color modes mapped to 32 gray shades on LCD • Text & graphics scaling to fit LCD resolution • Programmable for 8 or 16 bit PC bus interface • Hardware graphics pointer and caret • Fully compatible with GD510N520A VGA chipset • Software selectable support for LCD, Plasma, EL and digital/analog CRT displays • Intelligent 8/16 bit Video Memory read/write interface from the microprocessor • Can work with multi-frequency synthesizer IC • 32 bit non-multiplexed Video Memory interface • Supports eight 64kx4 or eight 256kx4 DRAMs, or four 128Kx8 pseudo-static RAMs.
• Support for system power down modes • 16 ICs including RAM for motherboard VGA Can share video memory & RAMDAC with graphics coprocessor (eg 34010) • Advanced low power CMOS technology CL - GD 6101620 Flat Panel/CRT Enhanced VG'A, :Controller OVERV,I,EW The CL-GD610 Graphics/Attributes chip and the CL-GD620 Sequencer/CRT Controller chip are enhanced versions of the CL-GD510A/520A VGA chipsets and continue to be hardware compatible with the IBM® VGA, EGA, CGA, and MDA standards, as well as with the Hercules® HGC at all levels-register, data path and BIOS.
In additiqn, these chips may be used with a variety of flat panel displays as well as all popular CRT displays (CD, MD, ECD, PS/2, Variable frequency).
Monochrome LCD panels are driven by duty cycle modulation techniques to yield 16 gray scales with no screen flickering or stability problems.
In addition, CIRRUS LOGIC's AutoMapTM technique automatically maps 256 colors into as many as 32 shades of gray for CRT quality gray scale emulation.
Foreground/background color attributes are remapped automatically for maximum contrast.
Expanded Text and Graphics modes provide larger character fonts and the ability to fill a panel (via ratiometrically determined scanline replication) even with low-resolution video modes...

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