Intel 2700G
The Intel 2700G (Marathon) is a graphics - coprocessor for the XScale PXA27x with low power consumption (up to 50. MW ). It is based on the PowerVR MBX Lite (the successor to the graphics technology used in the Sega Dreamcast ) and the MVED1 (video) technology.
variants
There are three variants of the coprocessor: the 2700G3, 2700G5, and 2700G7.
2700G3
The 2700G3 is the inexpensive version of the coprocessor. It has 384 kB of memory directly on the chip (on-die) and is therefore suitable for operating an HVGA display (320 × 480).
2700G5
The 2700G5 is the high quality version of the coprocessor. It has 704 kB of memory directly on the chip (on-die) and is therefore suitable for operating a VGA display (640 × 480) and for decoding MPEG-4 videos.
2700G7
The 2700G7 is identical to the 2700G5, but has 16 MB of memory with 100 MHz clock frequency and a 32-bit bus with a theoretical bandwidth of a maximum of 400 MB / s.
Functions
All variants have a 32-bit core in BGA housing 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 run the XScale processor and the display (which is connected to the 2700G) at the same time. The 2700G can operate an external display with a maximum of 1024 × 768 (32-bit colors) or 1280 × 1024 (16-bit colors).
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 a maximum of 84 million pixels per second.
3D graphics acceleration
The 2700G has a completely hardware-based graphics pipeline and is compatible with the OpenGL ES 1.0 standard, implementing the Common-Lite profile. It offers texture compression , anisotropic filtering, and vertex-based fog , among other things . The 3D accelerator can process around 831,000 triangles per second.
Video acceleration
The 2700G supports Inverse Zig-Zag , Inverse Discrete Cosine Transform , and Motion Compensation to accelerate video encoding for MPEG-1 , MPEG-2 , MPEG-4, and WMV . It can decode MPEG-1, 2 and WMV at 720 × 480 ( DVD resolution) and MPEG-4 at 640 × 480, both at over 30 frames per second.
equipment
The 2700G is currently represented in the Dell Axim X50v and X51v , Gigabyte g-smart t600, Pepper Pad 2 and the discontinued Palm Foleo.