E602204_HD64413A 查看數據表（PDF） - Mitsumi
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E602204_HD64413A Datasheet PDF : 387 Pages
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Section 1 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.
A sample Q2SD system configuration is shown in figure 1.1.
Address
control
SuperH
or Data
CPU (16)
Data
(16)
Q2SD
Analog
RGB
Analog
RGB
Video amplifier
Video
encoder
Analog
NTSC
Memory
Address
(14)
Data
(16 or 32)
Digital video
data (8)
Video
decoder
Display list
Cursor
Binary/multi-valued source
Binary work area
Video
screen
Frame Frame Background
buffer 0* buffer 1* screen*
External
video
UGM (SDRAM)
Note: 16-bit/8-bit color precision
Figure 1.1 Sample System Configuration
400 × 240, etc.
Display monitor
Rev. 2.0, 09/02, page 1 of 366
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