BCM7020r ? high-definition video uma subsystem with 2d graphics BCM7020 advanced video, graphics, and audio subsystem with bus bridge ? atsc-compliant, all-format mp@hl mpeg-2 video dual decoder with personal video recording feature dual channel decode with simultaneous standard-definition (sd) display of each channel content single channel high-definition (hd) decode with simultaneous display of both hd and scaled sd content simultaneous dual record, dual playback personal video recording (pvr) with encryption six on-chip video dacs dolby digital (ac-3)/mpeg multichannel audio decoder with spdif output stereo audio dacs ?advanced 2d/3d-effects graphics engine studio-quality text and graphics at hd resolution supports multiple layers and windows ntsc/pal analog video decoder ntsc/pal/hd video encoder bus bridge to memory, local bus, and pci pod support including dvs 213 des descrambler dvt and dc2-compliant transport demultiplexer with dvb, des, and multi2 descramblers support for 64 pids and 64 section filters provides a cost-effective solution for high-definition and standard-definition video and graphics systems common to cable and satellite applications. pvr capability enables personal viewing and scheduling, video-on-demand (vod), and vcr "trick mode" effects on any video stream. encryption ensures copy protection of recorded programming content includes simultaneous high-definition and standard-definition analog output for watch and record capability. advanced 2d-graphics system allows applications such as internet browsers and electronic program guides to deliver studio-quality text and graphics on television monitors. 3d effects create studio-quality screen transitions and adds a whole new dimension to electronic program guides. pci interface allows for direct connection of cost-effective superi/o devices. high-performance dma capability can be used for cable modem traffic. broadcom-developed device drivers enable rapid-software development cycle. supports dvs pod requirements. features summary of benefits 1 3 9 4 in te rfa c e id e c o n tro lle r u s b m ip s o r s h 4 c p u a n a lo g a u d io s p d if a u d io i 2 s in te rfa c e s d u a l v id e o o u t r o m / f la s h i/o s d r a m b c m 3 4 1 5 c m o s t u n e r b c m 3 4 1 5 c m o s t u n e r BCM7020 b c m 3 4 1 5 c m o s t u n er b c m 3 1 2 5 t ra n s c e iv e r b c m 4 4 1 3 h p n a /v .9 0 1 0 /1 0 0 b a s e -t x d u p le x f ilte r/ s p litte r v id e o a u d io d e m o d p c m c ia p o d i/f bcm3250 dual qamlink qpsk oob qpsk transmitter docsis 1.1 davic 1.2 voip dsp a n a lo g n t s c /p a l v id e o u p s tre a m d a ta o o b v id e o 1 m p e g x 2 v id e o 2 d a ta p c i b u s ir in te rfa c e d u a l s m a rtc a rd 2-kb instruction/ data cache
BCM7020 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 ? 2004 by broadcom corporation. all rights reserved. 7020-pb07-r 04/16/02 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 BCM7020 advanced high-definition, video-graphics subsystem supports the requirements of tele vision and set-top box systems that require high-definition or standard-definition decoding of mpeg-2 streams with simultaneous high-definition and standard-definition outputs. for systems that require only standard-definition output, a reduced-memory mode substantially reduces the amount of memory needed for the video decompressions process. the video decoder also supports multiple-stream, standard definition decoding, providing both tiled video and pip capability. the BCM7020 graphics are based on broadcom?s advanced video/ graphics technology that allows studi o-quality text and graphics to be displayed on television-based systems. the graphics compositing engine allows for many windows of graphics and video to be layered with blending and antialiasing, creating rich, high-quality, display capability. an on-board vector risc processor provides 2d graphics, anti-aliased text, and 3d effects. a mpeg-2 dvb/dc2-compliant transport demux with three transport stream inputs has advanced section filtering capability, dvb descrambler, des descrambler with ecb/ccb capability, and two iso7816 smart card interfaces. the des descrambler complies with the dvs 213 requirements for the transport stream pod interface. the transport engine is designed to support personal video recorder (pvr) functions, allowing the set-top box to support vcr-like functions, such as fast forward/reverse, pause, and record. the BCM7020 supports up to two record and two playback streams simultaneously, with optional 3des encryption/decryption. the BCM7020 decodes both dolby digital (ac-3) and mpeg multichannel compressed streams. audio output is provided over stereo dacs or spdif. a pcm audio engine mixes separate audio streams generated from the mpeg2/dolby audio decompression circuitry, pcm audio generated from the cpu, or pcm audio input via a baseband audio input. these streams can be resampled and mixed together with volume control. a bus bridge is incorporated to provide a complete solution bridging the processor to memory, local i/o, and pci. main memory is shared among video, graphics, and the cpus, which increases system performance and reduces cost. a flexible and powerful dma controller off loads the cpu by transferring data between the different busses and memory, facilitating the needs of systems incorporating a cable modem. dual composite video encoder and hd dacs hd/sd analog video pcm audio graphics and video display engine hd display and format conversion sdram controller dma engine paxel video/ graphics processor composite video a/d decoder and tbc video scaler hd/dual sd mpeg-2 video decoder cpu bus analog video in transport 1 cpu interface and access caches mpeg-2 transport processor with dvb and des descramblers sdram bus bridge rom and i/o dual i 2 s pci dual iso7816 i/f transport 3 transport 2 sd analog video pcm audio in spdif dolby and mpeg audio decoder dual pvr engine (2-kb instruction/ data cache) l r audio dacs stereo
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