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W9970CF Datasheet Preview

W9970CF Datasheet

VIDEO GRAPHICS CONTROLLER

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W9970CF
Video Graphics Controller
FEATURES
u Integrated Video Graphics Controller
64-bit graphics engine
Integrated video accelerator
On-chip 24-bit true color RAMDAC with up to 135
MHz pixel clock rate
On-chip clock synthesizers generating up to 135 MHz
VCLK and 80 MHz MCLK
u Graphics Engine
64-bit graphics acceleration
8/16/24 bit-per-pixel true color acceleration
Deep command queue to improve GE performance
Bit block transfer between system memory and
display memory
ú HostBLT
ú Pattern BLT
ú Color/font expanding BLT
ú Transparent BLT
ú Color/font expansion
ú Rectangle fill
ú 256 three-operand (source, pattern and
destination) ROPs
Bresenham line drawing
Short stroke vector drawing
Rectangle and line clipping
64 × 64 × 2 or 32 × 32 × 2 hardware cursor
u Video Acceleration
Video (YUV) and graphics (RGB) shared frame
buffer architecture
Two-dimensional bilinear interpolation scaling with
1-pixel resolution from 1× to 8×
On-chip standard CCIR 601 YUV to RGB color space
conversion
Cropping window and filtering supports
Hardware support for Microsoft DirectDraw feature
set
ú Double buffering and page flipping to prevent from
tearing in image
ú Transparent BitBLTs of sprites for game
acceleration
ú Color keying, chroma keying and window keying
to overlay video and graphics streams
ú On-the-fly blending of video and graphics streams
Supports 2× scaling to allow 320×200 game image to
be displayed at 640 × 480 full-screen resolution
High-quality video playback requiring only 1 MByte
DRAM in 1024 × 768 256-color mode
Dual hardware-accelerated video windows for video
conference applications
u Multimedia Video Interface
Glueless MPEG-1 video decoder (W9920DF) support
for YUV 4:2:2 video input
Glueless TV decoder support for YUV 4:2:2, NTSC
or PAL live-video input
Support for RGB 5:5:5, 5:6:5 or YUV 4:2:2 software
CODEC video input
Glueless support for 16-bit baseline VESA Advanced
Feature Connector (VAFC)
Glueless support for 8-bit bidirectional pass-through
VGA feature connector
u Compatibility
100% hardware compatible with IBM VGA standard
VESA BIOS extension support and VESA monitor
timing compliant
Driver support for all major operating systems, such
as Windows 3.1, Windows 95, Windows NT, and
OS/2 Warp 3.0
u System Bus Interface
Glueless support for 32-bit PCI Local Bus Revision
2.1 specification
Zero-wait-state PCI burst mode support
Linear addressing
Memory-mapped I/O
u Display Memory Interface
64 or 32-bit DRAM interface in a 1, 2, or 4 MByte
configuration
Flexible interface support for 128K × 8, 128K × 16,
256K × 4, 256K × 8, or 256K × 16 DRAMs
Preliminary
-1- March 1996




Winbond

W9970CF Datasheet Preview

W9970CF Datasheet

VIDEO GRAPHICS CONTROLLER

No Preview Available !

W9970CF
EDO DRAM support, dual-CAS# and dual-WE# ×16
DRAMs support
Auto memory size detection and auto bank switching
Supports UMA (Unified Memory Architecture) to
share frame buffer with system memory
u Green PC support
VESA DPMS
RAMDAC/clock synthesizers power management
u Smart monitor control
VESA-compatible DDC1 and DDC2
u Packaging
208-pin PQFP package
Live-Video
VAFC/Feature Connector
(optional)
TV
Decoder
(optional)
MPEG-1
Decoder
(optional)
BIOS
DRAM
Display
Memory
64
W9970CF
RGB
32
PCI Bus
Figure 1. W9970CF System Application Diagram
Preliminary
-2- March 1996


Part Number W9970CF
Description VIDEO GRAPHICS CONTROLLER
Maker Winbond
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W9970CF Datasheet PDF






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