A 56.8 GB/s 0.18 /spl mu/m embedded DRAM macro with dual port sense amplifier for 3D graphics controller

Advanced 3D graphics (3DG) technology will be used in console game machines, and it is desired to develop a rendering controller chip which can handle real time 3D animation with true colors. Embedded DRAM (eDRAM) technology attracts attention of the 3DG systems, because only eDRAM can satisfy the required data rate. Four or more pipelines, 200 MHz pipeline operating frequency, and 64 b per pixel are required. With this configuration, the required data rate is 39.4 GB/s, assuming the total penalty of 35% for page miss and video refresh. Furthermore, a 120 Mb frame buffer is required for a 1280/spl times/1024-pixels screen. This 0.18 /spl mu/m 32 Mb eDRAM macro satisfies these requirements.