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MCU includes IP broadcasting, DTCP-IP copyright protection

Posted: 08 Dec 2006 ?? ?Print Version ?Bookmark and Share

Keywords:Renesas? SH7652? microcontroller? IP broadcasting? DTCP-IP?

Renesas Technology America Inc.'s 200MHz SH7652 MCU with on-chip Ethernet control is said to be the first to incorporate both copyright protection function for IP broadcasting and the Digital Transmission Contents Protection Over Internet Protocol (DTCP-IP) copyright protection standard for in-home distribution.

The new device enables simultaneous transmission of two-channel high-definition (HD) digital content over the network for digital audio-visual and office automation products that feature built-in networking functions.

480MIPS performance
At 200MHz, the SH7652 32bit superscalar MCU offers 480MIPS of CPU performance and abundant processing power to handle both content protection and encryption/decryption functions for IP Broadcasting and DTCP-IP. The SH7652 features an IEEE-802.3-compliant MAC interface that supports connection speeds of up to 10/100Mbps and allows simultaneous transmission of two-channel HD digital content. The two-channel video stream port allows high-speed transfer of MPEG-2 TS (Transport Stream) and MPEG-2 PS (Program Stream) format data.

The video stream port allows an easy interface to an MPEG-2 encoder/decoder chip, facilitating high-speed network transmission of MPEG-2 TS format video data. The on-chip hardware encryption block enables high-speed encryption of content data, allowing HD digital content to be transmitted over the network with ease.

The on-chip peripherals and interfaces include a high-speed compliant USB 2.0 host/function and SD memory card host interface allow seamless connections to a memory card and WLAN modules. Audio support is provided through the Serial Sound Interface (SSI) for playback of MP3, WMA and other audio formats.

The SH7652 can be easily integrated into a multiprocessor system with its on-chip host interface. The MCU communicates with the host CPU using a 16bit SRAM like memory interface that provides a simple handshake for connection with the host system. CPU tasks associated with copyright protection and network processing can thus be independently handled by the SH7652 MCU without imposing a burden on the host CPU, simplifying the overall development process.

Hardware accelerator
A SH7652 also has hardware accelerator that performs TCP/IP checksum computations automatically without software intervention. The SH7652 handles error-correction and encryption/decryption functions for content protection in firmware, which is provided with the device.

Support tools are available to facilitate the system design process. Renesas offers an integrated development environment with software tools, evaluation boards and the low-cost Renesas E10A on-chip debug emulator.

Renesas Technology will continue to extend its lineup of products that have on-chip Ethernet controllers. Future devices under consideration include chips that will offer faster CPU performance, wireless LAN support and enhanced peripheral functions.

The SH7652, housed in a 240-pin CSP (13-by-13mm), is priced at $17 in sampling quantities.

- Marty Gold

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