Photo of Intel 2700G5 Graphics Co-processor

Intel Intel Corporation is an American multinational corporation and technology company headquartered in Santa Clara, California. It is the world's largest semiconductor chip manufacturer by revenue, and is one of the developers of the x86 seri ...

2700G (code-named Marathon) is a low power (50 mW max) graphics

co-processor A coprocessor is a computer processor used to supplement the functions of the primary processor (the CPU). Operations performed by the coprocessor may be floating-point arithmetic, graphics, signal processing, string processing, cryptography ...

for the

XScale XScale is a microarchitecture for central processing units initially designed by Intel implementing the ARM architecture (version 5) instruction set. XScale comprises several distinct families: IXP, IXC, IOP, PXA and CE (see more below), with some ...

PXA27x processor, announced on April 12, 2004. It is built on both the PowerVR MBX Lite chip design (which is a descendant from the PowerVR2 graphics technology that powered

SEGA is a Japanese multinational corporation, multinational video game and entertainment company headquartered in Shinagawa, Tokyo. Its international branches, Sega of America and Sega Europe, are headquartered in Irvine, California and London, r ...

Dreamcast The is a home video game console released by Sega on November 27, 1998, in Japan; September 9, 1999, in North America; and October 14, 1999, in Europe. It was the first sixth-generation video game console, preceding Sony's PlayStation 2, N ...

) and on the MVED1 video encoder/decoder

technology Technology is the application of knowledge to reach practical goals in a specifiable and reproducible way. The word ''technology'' may also mean the product of such an endeavor. The use of technology is widely prevalent in medicine, science, ...

Different variants

This accelerator comes in 3 variants: The 2700G3, 2700G5 and 2700G7.

2700G3

The 2700G3 is the value version of the accelerator. It has 384 kB of on-die memory suitable for driving an HVGA (320×480) or smaller graphics display.

2700G5

The 2700G5 is the performance version of the accelerator. It has 704 kB of on-die memory suitable for driving a VGA (640×480) resolution display and decoding MPEG-4 video.

2700G7

The 2700G7 is the same as the 2700G5 but is stacked with 16 MB of local memory with a 100 MHz, 32-bit bus (maximum 400 MB/s theoretical bandwidth) in the same package.

Features

All the chips have a 75 MHz, 32-bit core shipped in BGA packaging.

Accelerated dual display

The 2700G has its own LCD controller and two LCD outputs. This allows for the XScale processor and 2700G's graphics displays to be used at the same time. The 2700G can drive an external display up to 1024×768 (with 32-bit colour) or 1280×1024 (with 16-bit colour).

2D graphics acceleration

The accelerator supports

clipping Clipping may refer to: Words * Clipping (morphology), the formation of a new word by shortening it, e.g. "ad" from "advertisement" * Clipping (phonetics), shortening the articulation of a speech sound, usually a vowel * Clipping (publications) ...

alpha blending In computer graphics, alpha compositing or alpha blending is the process of combining one image with a background to create the appearance of partial or full transparency. It is often useful to render picture elements (pixels) in separate pas ...

and

anti-aliasing Anti-aliasing may refer to any of a number of techniques to combat the problems of aliasing in a sampled signal such as a digital image or digital audio recording. Specific topics in anti-aliasing include: * Anti-aliasing filter, a filter used be ...

. It also has a variety of block level transfer (BLT) functions. The 2D accelerator is capable of up to an 84 million pixels per second fill rate (150 million pixels per second claimed by intel).

2D features of Intel 2700G

* ROP 2,3,4 *

Alpha Blending In computer graphics, alpha compositing or alpha blending is the process of combining one image with a background to create the appearance of partial or full transparency. It is often useful to render picture elements (pixels) in separate pas ...

* Full-screen

antialiasing Anti-aliasing may refer to any of a number of techniques to combat the problems of aliasing in a sampled signal such as a digital image or digital audio recording. Specific topics in anti-aliasing include: * Anti-aliasing filter, a filter used be ...

BitBLT Bit blit (also written BITBLT, BIT BLT, BitBLT, Bit BLT, Bit Blt etc., which stands for ''bit block transfer'') is a data operation commonly used in computer graphics in which several bitmaps are combined into one using a ''Truth_table#Binary_opera ...

, StretchBLT, CSCBLT * Hardware doubling and multiplication of pixels *

Color depth Color depth or colour depth (see spelling differences), also known as bit depth, is either the number of bits used to indicate the color of a single pixel, or the number of bits used for each color component of a single pixel. When referring to ...

of 16, 18, and 24 bit

3D graphics acceleration

The 2700G has a complete hardware rendering

pipeline Pipeline may refer to: Electronics, computers and computing * Pipeline (computing), a chain of data-processing stages or a CPU optimization found on ** Instruction pipelining, a technique for implementing instruction-level parallelism within a s ...

and is compatible with the

OpenGL ES OpenGL for Embedded Systems (OpenGL ES or GLES) is a subset of the OpenGL computer graphics rendering application programming interface (API) for rendering 2D and 3D computer graphics such as those used by video games, typically hardware-accel ...

1.0 standard, using the common-lite profile. The 3D accelerator is capable of processing about 831 000 triangles per second (944,000 triangles per second claimed by intel).

3D features of Intel 2700G

* Screen tiling *

Texture compression Texture compression is a specialized form of image compression designed for storing texture maps in 3D computer graphics rendering systems. Unlike conventional image compression algorithms, texture compression algorithms are optimized for random ac ...

* Flat shading and gourad shading * Perspective correct texturing * Vertex fogging * Pixel Alpha Blending * Bilinear, trilinear, and

anisotropic filtering In 3D computer graphics, anisotropic filtering (abbreviated AF) is a method of enhancing the image quality of textures on surfaces of computer graphics that are at oblique viewing angles with respect to the camera where the projection of the t ...

* Dot3 Bump Mapping. * Full-screen AA (

supersampling Supersampling or supersampling anti-aliasing (SSAA) is a spatial anti-aliasing method, i.e. a method used to remove aliasing (jagged and pixelated edges, colloquially known as "jaggies") from images rendered in computer games or other computer p ...

) *

Z-buffer A depth buffer, also known as a z-buffer, is a type of data buffer used in computer graphics to represent depth information of objects in Three-dimensional space, 3D space from a particular Perspective (graphical), perspective. Depth buffers are ...

* Internal

ARGB RGBA stands for red green blue alpha. While it is sometimes described as a color space, it is actually a three-channel RGB color model supplemented with a fourth ''alpha channel''. Alpha indicates how opaque each pixel is and allows an image to ...

rendering * Hardware converter of integer values into floating point

Video acceleration

The 2700G performs Inverse Zig-Zag, Inverse Discrete Cosine Transform, and

Motion Compensation Motion compensation in computing, is an algorithmic technique used to predict a frame in a video, given the previous and/or future frames by accounting for motion of the camera and/or objects in the video. It is employed in the encoding of video d ...

to speed up

MPEG-1 MPEG-1 is a standard for lossy compression of video and audio. It is designed to compress VHS-quality raw digital video and CD audio down to about 1.5 Mbit/s (26:1 and 6:1 compression ratios respectively) without excessive quality loss, making ...

MPEG-2 MPEG-2 (a.k.a. H.222/H.262 as was defined by the ITU) is a standard for "the generic video coding format, coding of moving pictures and associated audio information". It describes a combination of Lossy compression, lossy video compression and ...

MPEG-4 MPEG-4 is a group of international standards for the compression of digital audio and visual data, multimedia systems, and file storage formats. It was originally introduced in late 1998 as a group of audio and video coding formats and related tec ...

and

WMV Windows Media Video (WMV) is a series of video codecs and their corresponding video coding formats developed by Microsoft. It is part of the Windows Media framework. WMV consists of three distinct codecs: The original video compression technology ...

video decoding. The accelerator can decode MPEG-1, MPEG-2 and WMV at 720×576 (

DVD The DVD (common abbreviation for Digital Video Disc or Digital Versatile Disc) is a digital optical disc data storage format. It was invented and developed in 1995 and first released on November 1, 1996, in Japan. The medium can store any kind ...

Resolution),

at 640×480, and H.264/AVC baseline at 352x288, all at 30 frames per second.

Devices

The 2700G was featured in the Dell Axim X50v, Dell Axim X51v,

Gigabyte The gigabyte () is a multiple of the unit byte for digital information. The prefix ''giga'' means 109 in the International System of Units (SI). Therefore, one gigabyte is one billion bytes. The unit symbol for the gigabyte is GB. This defini ...

GSmart Gigabyte Technology (branded as GIGABYTE or sometimes GIGA-BYTE; formally GIGA-BYTE Technology Co., Ltd.) is a Taiwanese manufacturer and distributor of computer hardware. Gigabyte's principal business is motherboards. It shipped 4.8 million moth ...

t600, Pepper Pad 2 and

Palm Foleo The Palm Foleo was a planned subnotebook computer that was announced by mobile device manufacturer Palm Inc. on May 30, 2007, and canceled three months later. It intended to serve as a companion for smartphones including Palm's own Treo line. ...

(cancelled). It was also used in some standalone signage kiosks such as the MediaStaff DS and HID's, such as the Clipsal DALIcontrol DCLCD70 LCD Touch Screen Controller, and the Advantech UbiQ-350 and UbiQ-470. As of Intel selling its XScale unit to Marvell, this device is discontinued.

References

External links

Pepper Pad

3D accelerated games designed for use with the 2700g.
{{Graphics Processing Unit Intel graphics Intel microprocessors Graphics cards