2.4 A 210mW Graphics LSI Implementing Full 3D Pipeline with 264Mtexels/s Texturing for Mobile Multimedia Applications

As mobile applications are moving to realtime multimedia, more functions are integrated into handheld devices [1-4]. Unlike the realtime decoding of MPEG-4 video [1,4], the performances of hardware-accelerated 3D solutions designed for mobile plat-forms are still below the market demands showing only limited shading operations [2,3]. Since the realization of various 3D functions requires huge computing power and corresponding memory bandwidth, previous LSIs integrate DRAM using the embedded memory logic technology although it is cost-inefficient due to process complexity. In this work, a graphics LSI using the pure DRAM technology is implemented to integrate both the logic and memory at low cost. Its circuits and architecture are optimized so that the full 3D pipeline is realized with less than 210mW at the drawing speed of 264Mtexels/s bilinear MIPMAP texturing and antialiasing, applicable to handheld devices