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CL-GD546X Datasheet, PDF (1/3 Pages) Cirrus Logic – 64-Bit Graphics Engine with Integrated 3D Game Acceleration(CL-GD5464) | |||
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CL-GD546X
Advance Product Bulletin
FEATURES
s 64-bit graphics engine with integrated 3D game
acceleration (CL-GD5464)
â Perspective textures mapping
â Bilinear/trilinear ï¬ltering
â Mip mapping
â Lit, copy, decal, and blend textures
â Texture decompression
â Mono rasterization (single-pass lighting)
â Stippling
â Polygon, line, and point drawing
â 16-bit Z-buffer
â Gouraud shading
â Alpha blending, fog, and transparency
â Display list processing for maximum performance
â Hardware page ï¬ipping
â Sub-pixel accuracy
s High-performance 64-bit GUI accelerator
â Three-operand BitBLT (bit block transfer)
â Color expansion for 8-, 16-, 24-, and 32-bpp modes
â Stretch BLT
s PCI 2.1-compliant bus master (CL-GD5464)
â DMA maximizes system performance
â Host-rendered/cached texture maps
s AGP (accelerated graphics port) support
(CL-GD5465)
(cont.)
High-Performance
VisualMedia⢠Accelerators
CL-GD5462 (2D)
CL-GD5464 (3D)
CL-GD5465 (AGP)
OVERVIEW
The CL-GD546X is the Laguna ⢠family of pin-com-
patible, Rambus®-based 2D/3D graphics accelera-
tors. The CL-GD5462, the ï¬rst family member,
provides multi-window video and graphics accelera-
tion with greater-than-VRAM performance at lower-
than-VRAM cost. The follow-on product, the
CL-GD5464, offers 3D graphics capability in addi-
tion to maintaining the same high level of 2D perfor-
mance offered by the CL-GD5462.
The 64-bit graphics engine of the CL-GD546X fea-
tures standard GUI acceleration hardware as well as
advanced features such as stretch BLT and video
playback scaling. Color-key and chroma-key opera-
tions are supported to enable graphics and video to
be combined in an efï¬cient manner. The
CL-GD546X integrates a 24-bpp palette DAC, clock
generators, a full-feature VGA controller, and
V-Port⢠bus for easy expandability.
(cont.)
System
Block Diagram
RDRAM
RDRAM
CL-GD546X
208-PIN HQFP
MPEG1/MPEG2
TV TUNER
TELECONFERENCE
(OPTIONAL)
V-Port â¢
5
4
3
2
1
0
RGB/DDC
RDRAM
RDRAM
September 1996
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