Cirrus CL-GD5465 64-bit graphics engine with integrated 3d game acceleration(cl-gd5464) Datasheet

CL-GD546X
Advance Product Bulletin
FEATURES
■ 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
■ High-performance 64-bit GUI accelerator
— Three-operand BitBLT (bit block transfer)
— Color expansion for 8-, 16-, 24-, and 32-bpp modes
— Stretch BLT
■ PCI 2.1-compliant bus master (CL-GD5464)
— DMA maximizes system performance
— Host-rendered/cached texture maps
■ AGP (accelerated graphics port) support
(CL-GD5465)
High-Performance
VisualMedia Accelerators
CL-GD5462 (2D)
CL-GD5464 (3D)
CL-GD5465 (AGP)
OVERVIEW
The CL-GD546X is the Laguna  family of pin-compatible, Rambus-based 2D/3D graphics accelerators. The CL-GD5462, the first family member,
provides multi-window video and graphics acceleration with greater-than-VRAM performance at lowerthan-VRAM cost. The follow-on product, the
CL-GD5464, offers 3D graphics capability in addition to maintaining the same high level of 2D performance offered by the CL-GD5462.
The 64-bit graphics engine of the CL-GD546X features standard GUI acceleration hardware as well as
advanced features such as stretch BLT and video
playback scaling. Color-key and chroma-key operations are supported to enable graphics and video to
b e c o m b i n e d i n a n e f fi c i e n t m a n n e r. T h e
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
(cont.)
MPEG1/MPEG2
TV TUNER
TELECONFERENCE
(OPTIONAL)
V-Port
5
PCI/AGP
4
3
2
CL-GD546X
208-PIN HQFP
1
0
RGB/DDC
RDRAM
RDRAM
September 1996
FEATURES/OVERVIEW
CL-GD546X
Laguna Family VisualMedia Accelerators
FEATURES (cont.)
OVERVIEW (cont.)
■ Video playback acceleration
Based on the CL-GD5462, the CL-GD5464 incorporates a 3D module, PCI bus mastering, and a newer,
230-MHz DAC. The CL-GD5464 offers very costeffective hardware acceleration for the latest generation of 3D games that rely heavily on texture mapping to achieve a dramatic experience for the end
user. The rendering performance is tuned to
Microsoft’s Direct3D game API. The CL-GD5464 is
also compatible with many other 3D game APIs on
the market.
—
—
—
—
Single-pass X, Y interpolated scaling
Hardware occlusion for three video windows
YUV-to-RGB conversion
Color and chroma key
■ Rambus memory architecture
— Low-latency devices supported
— Single memory for color-buffer, Z-buffer, and texture
store
■ V-Port  for peripheral expansion
— MPEG decoder
— TV tuner
— Teleconferencing
■ Integrated VGA controller
■ Integrated 230-MHz palette DAC and clock synthesizer (CL-GD5462 is 170 MHz)
— Supports resolutions up to 1600 × 1200 at 85 Hz
— True-color operation up to 1024 × 768
— Hardware cursor
■ DDC (display data channel) level 2B-compliant
monitor signaling
■ ‘Green PC’ power-saving features support
— DPMS (display power management signaling)
— System power-down
The CL-GD5464 operates as a PCI bus master for
maximum system throughput. Use of the PCI bus
master reduces the system cost by optionally storing
texture maps, Z-buffer, and display list instructions
for 3D operation in system memory.
The CL-GD5465 also supports Intel’s AGP (accelerated graphics port) for higher bandwidth between
the system memory and the graphics subsystem.
Both the CL-GD5462 and CL-GD5464 are onechannel devices with bandwidth up to 600 Mbytes
per second. While maintaining the same pin layout,
future Laguna family members will use two Rambus
channels to increase the bandwidth to 1.2 Gbytes
per second.
3D GRAPHICS AND VIDEO MODES (CL-GD5464)
The following table shows some of the video data formats associated with each of the graphics display
modes for the CL-GD5464.
a
RDRAM
Memory Size
Screen Resolution
(Double-Buffered)
Color Depth
(Double-Buffered)
Z-Buffer
Off-Screen
Texture Memory a
1 Mbyte
640 × 480
8 bpp
Host based
> 350 Kbytes
1 Mbyte
320 × 240
16 bpp
16 bit
> 450 Kbytes
2 Mbyte
640 × 480
16 bpp
16 bit
> 150 Kbytes
2 Mbyte
640 × 480
16 bpp
Host based
> 600 Kbytes
2 Mbyte
485 × 380
16 bpp
16 bit
> 800 Kbytes
Additional texture maps can be stored in system memory and accessed by the CL-GD5464 bus master capability.
CL-GD546X
Laguna Family VisualMedia Accelerators
SOFTWARE DRIVERS SUPPORT
Cirrus Logic provides an extensive and expanding range of software drivers to enhance the resolution and
performance of many software packages. The following table lists the Cirrus Logic software drivers for the
CL-GD546X. The CL-GD5464 is a software superset of the CL-GD5462.
Software Drivers
Microsoft Windows
Microsoft DCI Provider
(display control interface)
Microsoft Windows 95
Microsoft DirectDraw
Microsoft Windows NT 
AutoCAD
AutoShade with
Renderman
3D Studio
MicroStation
OS/2 v3.×, Warp
VPM
(video port manager)
Resolution Supported
No. of Colors
640 × 480, 800 × 600, 1024 × 768, 1280 × 1024, 1600 × 1200
256 (8 bit)
640 × 480, 800 × 600, 1024 × 768, 1280 × 1024
65,536 (16 bit)
640 × 480, 800 × 600, 1024 × 768
16.8 Million (24 bit)
640 × 480, 800 × 600, 1024 × 768
16.8 Million (32 bit)
CL-GD5464 only
640 × 480, 800 × 600, 1024 × 768, 1280 × 1024, 1600 × 1200
256 (8 bit)
640 × 480, 800 × 600, 1024 × 768, 1280 × 1024
65,536 (16 bit)
640 × 480, 800 × 600, 1024 × 768
16.8 Million (24 bit)
640 × 480, 800 × 600, 1024 × 768
16.8 Million (32 bit)
640 × 480, 800 × 600, 1024 × 768, 1280 × 1024, 1600 × 1200
256 (8 bit)
640 × 480, 800 × 600, 1024 × 768, 1280 × 1024
65,536 (16 bit)
640 × 480, 800 × 600, 1024 × 768
16.8 Million (24 bit)
640 × 480, 800 × 600, 1024 × 768, 1280 × 1024
256 (8 bit)
640 × 480, 800 × 600, 1024 × 768
65,536 (16 bit)
Resolution-independent
–
BIOS SUPPORT
UTILITIES
■ Fully IBM VGA-compatible BIOS
■ Manufacturing test
■ VBE (VESA BIOS Extension) v2.0 support
■ Video-mode configuration utility: CLMODE
■ PCI support
■ Configured OEM system integration: OEMSI
■ DPMS and DDC2B support in ROM
■ Resolution switching utility: WINMODE
■ Plug-and-play support
■ RAMBIOS utility
■ Screen centering utility
■ Register editor and viewer
Similar pages