SoC for car information systems has 2D/3D graphics engines on-board
24 March 2004DSP, Micros & Memory
Information Security
Infrastructure
Renesas Technology's SH7770 SoC (system-on-chip) which uses a newly developed SH-4A SuperH family CPU core, offers the industry's first on-chip 2D and 3D graphics engines for varied drawing functions, including map drawing. Together with a GPS baseband processing function and more than 50 other comprehensive on-chip peripheral modules, this makes the device an ideal single-chip solution for car information systems (CIS) such as next-generation car navigation devices, says the manufacturer.
The SH-4A CPU core operates at up to 400 MHz, approximately 70% faster than the current SH-4 CPU core. With a high processing performance of 720 MIPS, the SH7770's cache memory employs a 4-way design that provides a higher hit rate and helps speed up software processing. The instruction set is also upward-compatible with that of the existing SH-4 core, allowing existing programs to be used and system development time to be reduced.
The SH7770 incorporates most of the functions needed by a next-generation CIS, making it possible to achieve lower system cost with fewer parts. The on-chip 2D graphics engine offers fast and high-quality implementation of map drawing operations. The chip incorporates a PowerVR MBX 3D graphics engine from UK-based Imagination Technologies. This enables the device to handle 3D drawing not only for navigation applications but also for multimedia applications that require high-speed 3D drawing. To further lighten CPU load, both graphics engines also include a geometry engine that performs tasks such as vertex coordinate calculation.
The SH7770 features over 50 on-chip peripheral modules. These include: a GPS baseband processing module; an interface for connection to a speech processing IC; a USB interface; an in-vehicle LAN CAN interface; and a variety of serial interfaces.
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