BCM7115 ? single-chip set-top box with pvr single-chip set-top box with pvr system block diagram ? 1024/256/64-qam variable symbol rate receiver supporting itu-t j.83 annex a/b/c qpsk out-of-band receiver and a qpsk to 256-qam upstream burst modulator davic 1.2/1.5 mac dolby ? ac-3/musicam ? audio decoding 2d/3d graphics engine ntsc/pal video decoder ntsc/pal video encoder btsc decoder external bus interface (ebi) serving as local bus high-performance, 200-mhz risc mips32? processor with 8-kb i and 8-kb d caches usb host with dual port (ohci) peripheral devices include ieee 1394 interface, pod interface, v.90 softmodem support, led, uarts and ide controller personal video recording (pvr) support with ide controller, 3des, and dedicated dma engines single unified memory architecture software device drivers supporting multiple operating systems and middlewares bcm7040 mpeg-2 encoder interface integrated front-end and back-e nd results in the most cost- effective, single-chip set-top box solution with personal video recording (pvr) pvr engine supports time shifting on a program being viewed and recording of another program simultaneously (watch and record) support for davic and dcii enables deployment in major cable markets worldwide industry-leading compact form factor design is enabled by high integration high-performance risc processor can support today?s demanding set-top box operating systems and applications external qam demodulator support for pvr watch and record features summary of benefits BCM7115 bcm4413 ethernet hpna 1/2 sdram flash rom iso-7816 (2x) pod (pcmcia) rs-232 s-video/composite/rgb spdif/analog l/r rf 3/4 cmos tuner tuner video channel hdd bcm7040 mpeg-2 encoder
overview ? phone: 949-450-8700 fax: 949-450-8710 e-mail: info@broadcom.com web: www.broadcom.com broadcom corporation 16215 alton parkway, p.o. box 57013 irvine, california 92619-7013 ?2003 by broadcom corporation. all rights reserved. 7115-pb06-r 12/29/03 broadcom ? , the pulse logo, and connecting everything ? are trademarks of broadcom corporation and/ or its subsidiaries in the united states and certain other countries. all other trademarks mentioned are the property of their respective owners. the BCM7115 is a single-chip set-top box device that combines the key aspects required for the next generation of set-top boxes, including cost- effective single-chip design, personal video recording (pvr), communication via davic or other pr otocol, and support of all major global physical layer standards for worldwide deployment. the BCM7115 includes a 1024/256/64-qam receiver, an out-of-band qpsk receiver, and a qpsk to 256-qam upstream burst modulator. all major physical layer standards are supported for deployment worldwide. the device includes a complete davic 1.2/1.5 mac for interactive services. the BCM7115 also includes a sta ndard definition mpeg-2 video decoder and 2d/3d graphics subsystem. this allows for the display of studio-quality text/graphics and 3d effects. the dvb/dcii transport of the device supports pvr. this su pport includes time shifting on the program being viewed and recording of another program simultaneously. a full pcm audio engine for mixing sounds into the main audio stream is also on-chip. outputs include left and right analog and spdif. the BCM7115 also contains a high-performance mips32 risc processor with 8-kb i cache and 8-kb d cache. the BCM7115 includes a number of peripherals required for next- generation set-top boxes, including usb host, ide controller for connection to disk drives, pod interface for external conditional access, and a glueless ieee 1394 interface. the BCM7115 also contains support for the broadcom v.90 softmodem. onboard descrambling supports all major conditional access systems and includes 3des encryption/decryption for pvr. the BCM7115 represents the most integrated, cost-effective set-top box single-chip solution incorporati ng next-generation requirements, including support of multiple middlewares and applications. it is built on the previous generation of broadcom silicon and software to offer low risk and quick time-to-market for interactive broadband set-top boxes. ir rx/tx gpio irda led uart (x3) keypad counters (x3) spi and iic master ntsc/pal analog video dec broadcom front-end technology bb analog 1024/256/64-qam in-band demod with 10-bit a/d 70?30 mhz out-of-band qpsk demod with 6-bit a/d pod/ca i/f dvb/des descrambler icam ib/oob dc2/dvb transport with pvr cp (3des) mpeg 2/dc2 video decoder musicam / dolby ac3/ audio decoder pcm audio peripherals: engine with stereo dac ntsc/pal video encoder with 4 dacs broadcom 2d/3d mips32 8-kb i, 8-kb d cache 200 mhz graphics with filters, scaler rf 3/4 remod with sound trap arbiter/memory control paxel tm vector risc coprocessor btsc decoder usb host v.90 modem i/f ultra dma ide rom ddr sdram (16) davic 1.2/1.5 r l spdif composite rf 3/4 remod output s video rgb i/o (ebi) 0?5 mhz transport ports (1394, external ca) daa/ codec fec sram audio in transport remux 36/44 mhz pod i/f iso7816 flash or power amp/ image reject filter burst qpsk to 256-qam mod with 10-bit a/d hdd usb peripherals
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