Product Description
The RGB640 TM High Performance Palette DAC from IBM combines a comprehensive array of high-end display subsystem features with real-time layer-blending and color space conversion circuitry for the concurrent display of 3D animation, true-color digital video, business graphics and photorealistic natural images.
The RGB640 provides individual pixel formats for up to 16 overlay windows. Start-skip configuration of the 160-bit memory interface maximizes frame buffer design flexibility. Double-buffered primary and overlay layers enhance 3D applicaitons.
Mixed YUV and RGB formats and fully-programmable YUV-RGB conversion permit simultaneous display of graphics and video pixel streams. Programmable on-chip blending of the primary and overlay layers enables active use of multiple windows.
The RGB640’s 10-bit DAC and dual PLL clock synthesizers provide vibrant color with unsurpassed image stability and bright, flicker-free display even on large, high-resolution monitors.

Product Highlights
 170, 220 MHz operation
 Triple monotonic 10-bit DACs
 Fully programmable YUV-RGB conversion
 Mixed YUV and RGB pixels
 160-bit wide pixel data bus
 2:1, 4:1, 5:1, 8:1, 16:1, 16:3 multiplexing
 Display modes up to 1600x1280
 Large Screen ISO-compliant refresh rates
 4/8/10/16/24/30-bits per pixel
 Gamma correction
 1024-shade gray scale
 Three 1K x 10 color palette RAMs
 Two on-chip clock generators
 Up to 16 user-defined primary and overlay window types
 64x64/32x32 translucent hardware cursor
 On-chip crosshair
 Double-buffered primary and overlay layers
 Primary/overlay layer blending
 Chroma-key
 Pixel interleave
 8-bit VGA Data Input
 On-chip diagnostic functions
 Low-power 3.3V operation
 5V-tolerant inputs
 272-pin QFP / 304-pin BGA package
 0.8 mm CMOS