The Intel 2700G (Marathon ) is a graphics coprocessor for the XScale PXA27x with low power consumption ( max. 50 mW). It is based on PowerVR MBX Lite ( the successor to the graphics technology that was used in the Sega Dreamcast ) and the MVED1 (Video) technology.
- 2.1 Accelerated Dual Display
- 2.2 2D graphics acceleration
- 2.3 3D graphics acceleration
- 2.4 video acceleration
There are three variants of the coprocessor: the 2700G3, 2700G5 2700G7 and.
The 2700G3 is the low cost version of the coprocessor. He has 384 kB of memory directly on the chip ( on-die ), making it suitable to operate a HVGA display (320 × 480).
The 2700G5 is the high quality variation of the coprocessor. He has 704 kB of memory directly on the chip ( on-die ), making it suitable for driving a VGA display (640 × 480 ) and to decode MPEG -4 videos.
The 2700G7 is identical with the 2700G5, but has 16 MB of memory with 100 MHz clock frequency and a 32 -bit bus with a maximum theoretical bandwidth of 400 MB / s
All versions have a 32- bit kernel in BGA package form, which is clocked at 75 MHz.
Accelerated Dual Display
The 2700G has its own LCD controller and two LCD outputs. This makes it possible to XScale processor and the display (which is connected to the 2700G ) to operate simultaneously. The 2700G can drive an external display with a maximum of 1024 × 768 ( 32 -bit color ) or 1280 × 1024 (16 -bit color ).
2D graphics acceleration
The 2D accelerator supports clipping, alpha blending and antialiasing. It also has blitting functions ( BitBLT, StretchBlt and CSCBLT ). It has a fill rate of up to 84 million pixels per second.
3D graphics acceleration
The 2700G has a completely hardware -based graphics pipeline and is with the OpenGL ES 1.0 standard compliant, where he implemented the Common -Lite profile. It offers, among other texture compression, anisotropic filtering and vertex - based fog. The 3D accelerator capable of processing approximately 831,000 triangles per second.
The 2700G supports Inverse Zig -Zag, Inverse Discrete Cosine Transform and Motion Compensation to speed with MPEG- 1, MPEG -2, MPEG -4 and WMV video encoding. It can convert MPEG -1, 2, and WMV 480 ( DVD resolution ) and MPEG -4 decode at 720 × 640 × 480, both with more than 30 frames per second.
The 2700G is currently the Dell Axim X50v and X51v, Gigabyte g - Smart t600, Pepper Pad 2 and the set represented Palm Foleo.