CL-GD546X Datasheet, PDF (1/3 Pages) Cirrus Logic – 64-Bit Graphics Engine with Integrated 3D Game Acceleration(CL-GD5464)

CL-GD546X
Advance Product Bulletin
FEATURES
s 64-bit graphics engine with integrated 3D game
acceleration (CL-GD5464)
— Perspective textures mapping
— Bilinear/trilinear filtering
— Mip mapping
— Lit, copy, decal, and blend textures
— Texture decompression
— Mono rasterization (single-pass lighting)
— Stippling
— Polygon, line, and point drawing
— 16-bit Z-buffer
— Gouraud shading
— Alpha blending, fog, and transparency
— Display list processing for maximum performance
— Hardware page flipping
— Sub-pixel accuracy
s High-performance 64-bit GUI accelerator
— Three-operand BitBLT (bit block transfer)
— Color expansion for 8-, 16-, 24-, and 32-bpp modes
— Stretch BLT
s PCI 2.1-compliant bus master (CL-GD5464)
— DMA maximizes system performance
— 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 first 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 efficient 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 ™
5
4
3
2
1
0
RGB/DDC
RDRAM
RDRAM
September 1996