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Renesas releases app processor for car navigation systems

Posted: 16 Nov 2007     Print Version  Bookmark and Share

Keywords:mobile devices; digital TV broadcasts; car navigation systems 

SH-MobileR2 (SH7723)

Renesas Technology Corp. has announced the SH-MobileR2 (SH7723), the second offering in the SH-Mobile Series of application processors for applications other than mobile phones. The new SH-MobileR2 is intended for use in portable and mobile devices with support for One-Seg terrestrial digital TV broadcasts, such as car navigation systems and personal navigation devices (PNDs). Sample shipments will begin in January 2008 in Japan.

The features of the SH-MobileR2 are summarised below.

( 1 ) 400MHz high-speed operation and 256Kbytes secondary memory cache

The earlier SH-MobileR (product name: SH7722) incorporates the SH4AL-DSP high-performance CPU core and operates at a maximum frequency of 266MHz. The new SH-MobileR2 incorporates the SH-4A CPU core for higher-speed operation and a floating-point processing unit (FPU) that increases the efficiency of video and audio processing. The new application processor's maximum operating frequency of 400MHz makes it approximately 1.5 times as fast as its predecessor. Processing performance when operating at 400MHz is 720MIPS (million instructions per second), and the FPU achieves a performance of 2.8GFLOPS (giga floating-point operations per second). The SH-MobileR2 thus has more than enough power to handle parallel processing of multiple applications or general-purpose operating systems, such as Windows CE or Linux, which impose a greater processing load than a dedicated OS. In addition, the 64Kbytes primary cache memory (32Kbytes each for instructions and data) is supplemented by a new 256Kbytes secondary cache memory (mixed instructions and data), contributing to faster software execution.

( 2 ) Multi-CODEC video processing IP for high performance and low power consumption

The SH-MobileR2 employs VPU5F (Video Processing Unit 5F), a high-performance multi-CODEC video processing IP that supports H.264/MPEG-4 AVC (H.264), the video compression standard used by the Japanese terrestrial digital broadcasting format ISDB-T..This IP enables VGA size encoding and decoding at a rate of 30 frames per second (fps). It supports MPEG-4 encoding and decoding and VC-1 decoding, making it possible to implement a variety of video applications such as video e-mail, videophone, and video capture. In addition, this application processor can support digital broadcasting systems used outside Japan, such as DVB-H in Europe and DMB in South Korea.

( 3 ) A wide variety of high-performance on-chip peripheral functions for multimedia support

The SH-MobileR2 incorporates a 2-D graphics accelerator for map rendering that provides better functionality and performance than that of the earlier SH-MobileR. This enables high-quality and high-speed map rendering. It also has an expanded edge emphasis function for high-quality display of terrestrial digital TV broadcasts, ensuring that the picture does not appear fuzzy when enlarged from QVGA to VGA or WVGA size. Additional peripheral functions include USB 2.0 host/function support (high-speed), an ATAPI controller allowing connection to a hard disk or DVD drive, and an SD host controller with high-speed specification support. This array of high-performance peripheral functions makes it possible to reduce the total number of parts and reduce system cost while maintaining high-level performance. A wide variety of middleware is available for the SH-MobileR2, including video middleware supporting H.264, MPEG-4, and WMV and audio middleware supporting aacPlus (Advanced Audio Coding Plus). These software solutions assist in the development of a total system.

Renesas Technology has released the SH-Mobile Series of application processors supporting terrestrial digital broadcasts for mobile phone systems early, and it has achieved widespread adoption in mobile phones. The company subsequently introduced the SH-MobileR, the first application processor in the series designed for systems other than mobile phones. It retained the many peripheral functions, structure, and ease of use of preceding models and received an enthusiastic reception. SH-MobileR2 is the second offering in the SH-Mobile Series of application processors for applications other than mobile phones, retaining the performance and ease of use of the SH-MobileR while responding to strong demand for enhanced performance. The SH-MobileR2 operates about 1.5 times as fast as the SH-MobileR and delivers functions providing an even higher level of performance.

The SH-MobileR2 incorporates the SH-4A CPU core and achieves processing performance of 720MIPS at the maximum operating frequency of 400MHz, for an excellent unit-frequency performance of 1.8MIPS/MHz. In addition, the 64Kbytes primary cache memory is supplemented by a new 256Kbytes secondary cache memory, enabling faster execution of software.

Also provided is the VPU5F IP core for high-performance video processing. VPU5F supports the H.264 video compression standard used for terrestrial digital broadcasts; encoding and decoding of MPEG-4, which is widely used for video recording and playback; and decoding of VC-1, which is used on PCs. This enables video processing with excellent picture quality, high speed, and superior performance.

The SH-MobileR2 has a wide range of on-chip peripheral functions such as multimedia functions. It employs a 2-D graphics accelerator for map rendering that delivers improved functionality and performance. The thick-line rendering function makes it easy to draw lines of a uniform thickness, regardless of the direction, when representing roads. The anti-aliasing function enables smooth rendering of polygons and diagonal lines. These functions contribute to high-quality, high-speed map rendering.

An expanded edge emphasis function delivers high-quality display of terrestrial digital TV broadcasts. It ensures that the picture does not appear fuzzy when enlarged from QVGA to VGA or WVGA size by enhancing the edges, performing inter-pixel correction, and filtering out noise. Other on-chip functions include a 24-bit compatible TFT colour LCD controller, USB 2.0 host/function (high-speed), an ATAPI controller allowing connection to a high disk or DVD drive, and an SD host controller with high-speed specification support. The SD memory card interface supports an optional CPRM (Content Protection for Recordable Media Specification) function, making possible recording and later playback of terrestrial digital broadcasts.

A range of system solutions is also planned to help shorten system development times and reduce system cost. These include a reference platform with the SH-MobileR2 mounted on it and a graphics library supporting the functions of the 2-D graphics accelerator. The reference platform will be a useful tool for examining system functions, evaluating performance, and more efficient software development. The graphics library conforms to the GDI-Sub specification and supports Windows Automotive 5.0 Service Pack 2 from Microsoft Corporation, making it possible to implement a variety of map rendering functions using the 2-D graphics accelerator. Scheduled third-party products that will support the SH-MobileR2 include middleware and a system development solution for One-Seg compatible applications from Hitachi ULSI Systems Co., Ltd., and, a BSP (Board Support Package) from Akita Electronics Systems Co., Ltd., with support for Windows CE 5.0 and Windows Automotive 5.0 Service Pack 2.

The package is a 449-pin BGA (21-by-21 mm, 0.8 mm pin pitch).

Renesas Technology plans to further extend the SH-Mobile Series in future by developing products for the increasingly advanced and sophisticated multimedia application systems of tomorrow and by introducing products optimised for evolving market needs in a timely manner.




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