The SoC solution for high-performance automotive information systems such as next-generation car navigation systems, the SH7775 integrates the top-of-the-line SH-4A CPU core of the SuperH series, with high processing performance of 1 GIPS (billion instructions per second). The device is a high-performance SoC that integrates the comprehensive peripheral capabilities required by many car navigation systems. These include a newly developed graphics engine optimized for mapping, a 3D graphics engine for high-level graphics processing, and GPS baseband processing.
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The SH7775 offers the following features:
The SH-4A CPU core operates at 600MHz, which is 50% higher than current Renesas SoC products: the SH7775's maximum operating frequency is 50% higher than the current SH7770. Both products integrate the SuperH series top CPU core SH-4A. At the highest operating frequency of 600MHz, the SH7775 achieves high processing performance in excess of 1GIPS, and the processing performance of the floating point processing unit (FPU) is 4.2GFLOPS (billion floating point operations per second). This high CPU processing power and FPU help to develop high performance systems. The instruction set is upwardly compatible with the SH-4 and can use existing programs to reduce system development time.
Newly developed on-chip graphics engine for mapping and 3D graphics engine optimization: The SH7775 integrates a graphics engine, maintains its current product line drawing capabilities and other 2D drawing capabilities, and adds dedicated 3D drawing capabilities for mapping. , such as triangle 3D drawings and texture maps. This will help to represent the various 3D objects in the map, with a drawing engine performing the drawing functions necessary for car navigation system display. Because the engine is upwardly compatible with existing engines, it can greatly simplify application development while using existing software. In addition, Renesas Technology plans to launch the MAPGL graphics software engine to further improve application development efficiency, and to obtain the highest performance from the new graphics engine with high-performance graphics software packages. Samples will be released in July 2007. It is expected that this package will reduce the time required to develop graphics applications for the SH7775. Like the SH7770, the SH7775 integrates PowerVR MBX from Imagination Technologies, Ltd. of the UK as its 3D graphics engine. This will help use the graphics application developed for earlier systems for the SH7775.
Fully equipped with peripheral functions of the car information system: The SH7775 integrates all the peripheral modules required for car navigation systems. These features include a GPS baseband processing module, an ATAPI interface, a USB v2.0 host/function interface, and a CAN*5 car local area network (LAN) interface. It also uses a unified memory architecture to enable memory sharing of different modules, reducing the number of external memory devices. The GPS baseband processing module uses an IP licensed by SiRF Technology Holdings Inc. of the United States. This comprehensive peripheral capability reduces the total number of components required to achieve higher system performance at a lower price.
The SH-4A CPU core for the SH7775 has a 600MHz operating frequency and a high processing capacity of over 1GIPS. The maximum operating frequency of the integrated floating point processing unit (FPU) is also 600MHz. The FPU supports single-precision and double-precision operations and provides single-precision mode computational performance of up to 4.2GFLOPS.
The SH7775 also integrates a graphics engine optimized for mapping. In addition to 2D drawing features such as thick line drawing and sawtooth removal, it also performs 3D drawing functions such as triangle 3D drawing and texture mapping. This will help to quickly provide high quality map images, an important feature of car navigation systems. Various 3D objects, such as buildings and milestones, can be provided as part of the map vision. A single drawing engine can handle the drawing of elements necessary for car navigation system display, including maps, icons, and menus.
In order to enable developers to fully exploit the full performance potential of the graphics engine, Renesas Technology will provide the MAPGL graphics software engine. This package uses a handy API (application programming interface) that makes it easy to take advantage of the graphics capabilities supported by the graphics engine that draws the map image. It also provides a PC simulation environment that reproduces the results generated on the actual system to support the development of new graphics applications.
To further reduce CPU load, the two graphics engines also employ a geometry engine to perform tasks such as vertex coordinate calculations. Due to the high operating speed of 150MHz and the improvement of the generation method, the graphics processing performance is up to three times that of the SH7770. The result is a very smooth 2D and 3D graphics display with high image quality.
The SH7775 also performs the extensive peripheral functions required for automotive information systems. Its peripheral modules include GPS baseband processing, ATAPI interface, USB v2.0 host/function interface, CAN car LAN interface, multiple audio interfaces and multiple serial interfaces.
In addition, the unified memory architecture employed helps each module share memory and reduce the number of external memory devices.
The external bus provides a 32-bit dedicated bus for connection to high-speed DDR2-SDRAM (Double Data Rate 2 Synchronous DRAM), while the 32-bit expansion bus facilitates connection to flash or SRAM.
The device is available in a 560-pin BGA (25mm x 25mm) package.
The E10A-USB emulator, which is connected to the host PC via a USB interface, can be used as a development environment. These on-chip debugging features help with real-time debugging at the highest operating frequency.
The user system development reference platform can provide the following functions to help users achieve effective system development: including automotive information system oriented peripheral circuits, which can provide a real equipment verification environment for user systems; application software can be used as software development tools; Easy to add custom user features.
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