Overview
The Q2SD (Quick 2D Graphics Renderer with Synchronous DRAM Interface) is a 2D graphics renderer that supports SDRAM interface in the SH microcomputer graphics accelerator “Quick” series (Q Series), based on the concepts of simplicity, realtime operation, and upgradability.

The use of unified graphics memory (UGM), a double-buffering system that switches drawing and display buffers in frame units, and the video-input function, providing a high-speed drawing performance of 60 screens per second, has made possible minimization of graphics memory (with the minimum configuration of a single 16-Mbit SDRAM memory), unified handling of graphics and natural images, and realtime software 3D graphics drawing. The separation of geometric operations (handled by the CPU) and rendering operations (handled by the Q2SD) has also resulted in improved system bus utilization.

The Q2SD is a high-performance graphics rendering LSI for multimedia applications, which provides both drawing and display, video input functions integrated into a single chip.