March 17, 1995
IBM
Product Highlights
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170, 220 MHz operation
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RGB624 pin and register compatible
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RGB525 register compatible
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64/32-bit wide pixel data bus
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Display modes up to 1600x1280
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Large Screen ISO-compliant refresh rates
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Packed 24-bit pixels
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4/8/16/24/32-bits per pixel
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Direct color
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Gamma correction
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256-shade gray scale
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Three 256x8 color palette RAMs
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Anti-sparkle circuitry
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Per-pixel palette bypass control
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Palette paging
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Triple monotonic 8-bit DACs
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Two on-chip clock generators
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64 x 6 4/32 x 3 2 advanced-function hardware
cursor
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100 MHz 8-bit VGA data input
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24-bit color border
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On-chip diagnostic functions
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Low-power 3.3V operation
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5V-tolerant inputs
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Power-down modes
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144-pin QFP package
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0.8
m CMOS
Applications
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Graphical user interfaces
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Business graphics
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Video playback and post-processing
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Games and virtual reality
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CAD/CAM
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Medical Imaging
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Scientic Visualization
Product Description
The RGB524TM High Performance Palette DAC from IBM brings
the high quality and advanced capabilities of the previous
generation RGB525 to a more compact package footprint,
reducing the board real-estate required for the design of high-
resolution true-color graphics subsystems.
Implemented in IBM’s CMOS technology, the RGB524 combines
a complete list of advanced features into one 144-pin QFP
package: 64-bit pixel data path, packed 24-bit pixels, two on-chip
programmable clock generators, video clocks up to 220 MHz, on-
chip 64x64 hardware cursor, triple monotonic 8-bit DAC’s to
display 16.8 million colors.
Like the RGB525, the RGB524 displays true color at 1280x1024
resolution with only 4-Megabytes of video memory.
The RGB524 provides vibrant color with unsurpassed image
stability and bright, icker-free display on large, high-resolution
monitors.
Functional Block Diagram
RGB524
170/220 MHz
High Performance
Palette DAC