Conexant’s product portfolio of multimedia ICs provide the finest combination of features, video performance, flexibility, size and value for today’s Set Top Box, PC Video, DVD playback, Digital photography and other video systems. Key features such as 10-bit current output DACs, worldwide video standards support, interfaces with common bus architectures and compact packages provide the ultimate combination of video performance, quality, ease of design and overall value.

TDC also have S3's range of leading-edge graphics controllers for PC and embedded applications.

2D Acceleration Features
128-bit, 143MHz 2D engine
256 ROPs - acceleration of BitBLT, rectangle fill, line draw, polygon fill,
  panning/scrolling and H/W cursor
8, 16 and 32bpp mode acceleration
DuoView+TM Dual Image Capability
Single chip Windows 98 multi-monitor support
Improved display flexibility with simultaneous LCD/CRT, CRT/CRT and LCD/CRT/TV operation capability
CRT and LCD refresh rates are independently programmable to allow optimum
   image quality
Enables different images on different displays simultaneously for true
   multitasking
Advanced LCD Panel Support
Dual LCD support
12-bit TMDSTM port and 36-bit CMOS interface
Integrated dual channel 110MHz LVDSTM transmitter
* Support for up to UXGA (1600 x 1200) colour panels with 9, 12, 18 and 24-bit
   interfaces
Support for VGA, SVGA and XGA DSTN colour panels with 8, 16 and 24-bit
   interfaces
Auto expansion and centering for VGA text and graphics modes on SVGA and
   larger panels
Motion Video Architecture
Second generation motion compensation for DVD playback
Subpicture blending and highlights
Dual Streams Processor™ technology for stretching and blending of two video
   streams
60MHz VIP video port for HDTV resolutions
ZV-Port compliant
High Quality, Integrated TV-Output Solution
Integrated NTSC/PAL TV encoder
Vertical overscan/underscan compensation
Integrated Macrovision® 7.01, CGMS-A and WSS support for DVD copy
   protection
Improved luma/chroma signal resolution and 2x output oversampling for
   premium image quality
Direct interface to a broad range of LCDs
Comprehensive Power Management
1.8V graphics core
ACPI and PCI Power Management compliant
64x64x2 Pixel Hardware pop-up icon available in all modes - 8 separate
   bitmaps can be stored
33MHz PCI bus support
300MHz RAMDAC with gamma correction
PCI 2.2 Compliant - DDC1 and DDC2B+ support for Plug and Play monitors

DirectX™ 9.0
DeltaChrome is equipped with programmable hardware shaders compatible with Pixel Shader version 2.0+ and Vertex Shader 2.0+. DeltaChrome actually goes beyond the DirectX 9.0 requirements with esoteric features for improved 3D and video quality. (www.Microsoft.com/windows/directx).

Hi-Def™ Computing
HDTV is the final word when it comes to high resolution displays available today. Thanks to DeltaChrome's unique, integrated Hi-Def HDTV encoder technology, you can now get the most from HDTV resolution capable displays, televisions and projectors.

Hi-Def HDTV encoding brings the theater home when watching a DVD. Video games played in Hi-Def mode bring characters to life before your eyes, and Hi-Def corporate presentations viewed with an HDTV resolution capable projector are crisper and more professional looking than ever before.

Chromotion™ Programmable Video Engine
The Chromotion Programmable Video Engine is a radical departure from fixed function video decoding and processing. The Chromotion engine has the flexibility to process MPEG-2/4, Windows Media Video, and other video standards. Fixed function processing such as iDCT is now handled by the programmable Chromotion engine. Post-processing to improve poor source material is an exciting new feature that will enhance video material such as webcasts.

The Chromotion engine's real-time rendering capabilities bring video effect processing to the mainstream. The home video enthusiast can now exercise as much ArtisticLicense™ as advanced video artists. All can edit and process video with Chromotion quality using familiar effects and filters for professional looking results for any project, whether simple or involved.

V8™ Pipeline
The DeltaChrome V8 pipeline is a sophisticated and complex full 8-pixel pipeline. An astounding 2.4 Giga-pixel per second fill rate increases the intensity of the gamer's visual experience and provides heart-pounding 3D graphics speed.

You will be assured of being the last player standing in the emerging mobile gaming trend when your laptop is equipped with DeltaChrome's V8 pipeline.

PicturePerfect™
DeltaChrome's PicturePerfect hardware anti-aliasing for full screen and WindowsXP text makes for a consistent, silky smooth-edged image. No more jaggies.

Advanced Deferred Rendering™
The completely new Advanced Deferred Rendering technology dramatically increases the efficiency of the 3D engine for maximum performance beyond standard z-culling technology. By maximizing effective bandwidth, Advanced Deferred Rendering does not leave extreme gamers short during peak 3D performance levels.

Various configurations and performance levels of Deltachrome are available, please see the S3 Website for more details.

An evaluation board is available to bona-fide OEMs, please call us for more details.

VT8271E Evaluation board/reference design with DVI, VGA and composite video support

Graphics Standards, Colour Depth & Display Resolutions

	RESOLUTION There are many different display colour depths and resolutions. People will talk about "CGA" or XGA resolution, but what does this mean? Also the higher the resolution, the more information is stored or required, and if this data is being transmitted over a communications link, the higher the bandwidth required. Read on...

Usage of bandwidth can be improved by reducing the colour depth (number of bits used per pixel to encode a colour), the table below is a reference to help explain this. If live video is involved, then the bit rate required is a derivative of the frame rate, we have shown bandwidth, in the table opposite, for 25 frames per second (fps).

Obviously, 768 Mbit/s is very high bandwidth, forms of compression are normally employed (MPEG etc.) which reduce this requirement dramatically.
What effect do these different formats have on the image visually? We have shown some examples below. (There may be some limitations due to screen resolution).

Standard	Horizontal Resolution	Vertical Resolution	Megapixel Resolution	Colour Depth (bits)	Bytes per frame	Kbps @ 25fps
QCIF	176	144	0.025	8	25,344	4,950
MDA	320	200	0.064	1	8,000	1,563
CGA	320	200	0.064	2	16,000	3,125
MCGA	320	200	0.064	8	64,000	12,500
CIF	352	288	0.101	8	101,376	19,800
VGA	640	480	0.307	8	307,200	60,000
NTSC	646	486	0.314	16	627,912	122,639
PAL	768	576	0.442	16	884,736	172,800
SVGA	800	600	0.480	16	960,000	187,500
XGA	1024	658	0.674	16	1,347,584	263,200
SXGA	1280	1024	1.311	16	2,621,440	512,000
SXGA	1280	1024	1.311	24	3,932,160	768,000

QCIF

VGA

XGA

These shots simulate the differences resolution and colour depth will make to the final image. Over and above this, these images are in 4:3 format, normally used by standard TVs and computer screens. Widescreen is in 16:9 format, the example shown on the right, PAL, demonstrates the extra information carried by such a picture. Click on the example pictures to see a representative example of the quality in a new window.

PAL