YGV638 Datasheet, PDF (2/26 Pages) YAMAHA CORPORATION – a pattern graphic controller with an on-chip VRAM and the ample drawing performance enables high-resolution animated GUIs on WVGA display panels.

■ Features
YGV638
■ Features
■ Display Function
● Video Output
· Monitor supported: TFT liquid crystal display (digital RGB connection) or compatible display
equipments
· Digital RGB666, Digital RGB666+FRC, Digital RGB888
· Supports NTSC, PAL, QVGA, WQVGA, VGA, WVGA, and SVGA
· Supports interlace and progressive scans
· Supports display timings in 1 dot and in 1 line resolution
· Equalizing pulse insertion for composite sync signals
· Dot clock polarity selection
· Sync signal polarity selection
· Gamma correction function (look-up table based)
· On-chip LCD timing controller
● Display Plane Functions
· Up to 341 planes (up to 128 planes per scan line) and one external video plane
· A layer displays either sprites, lines or texts
· Alpha-blending between layers
· Alpha-blending between layer and external video
· Picture attribute controls by layers (contrasts, brightness)
■ Layer Function
● Sprite
· Displaying up to 341 sprites per screen and up to 128 sprites per scan line
· Specified by horizontal and vertical coordinates
· Sizes from 8 dot × 8 dot to 1024 dot × 1024 dot. Horizontal and vertical scaling independently
selectable (in 8-dot unit)
· 2, 16, 64, or 256 palette colors from 16M colors, or 64K colors with 16-bit RGB, 256K colors with
18-bit RGB, and 16M colors, life-like picture quality with 24-bit RGB
· Scaling Function
· Anti-aliasing of the outline profile
· On-chip palettes with 1024 colors (combinations of 2 color palettes, 16 color palettes, 64 color
palettes, and 256 color palettes up to 1024 colors in total)
4GV638A21
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