San Jose, Calif. Renesas Technology America, Inc.'s 200 MHz SH7652 microcontroller 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.
At 200 MHz, the SH7652 32-bit superscalar microcontroller offers
480 MIPS 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 standard compliant media access
controller (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
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 wireless LAN
modules. Audio support is provided through the Serial Sound Interface
(SSI) for playback of MP3, WMA (Windows Media(Audio), and other
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 16-bit 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 microcontroller without imposing a
burden on the host CPU, simplifying the overall development process.
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.
For more details on the SH7652, see block diagram below.
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 (13mm x 13mm) is priced at $17 in sampling quantities.
Renesas Technology , (408) 382-7407