distinguishing features ? supports ntsc/pal/secam video input ? worldwide graphics controller compatibility ? pc 98/99 compliant ? acpi and power management ? transport stream dma for atsc and dvb digital broadcast C 40 mbps serial i/o C 20 mbps parallel i/o digital infotainment products conexants fusion tm family of pci video decoders integrates broadcast video and data capture, and playback in a single chip the newest addition to the fusion family of pci video decoders is the fusion 878a. it is a multifunctional pci device based on the original bt878/879 products. the fusion 878a is pin-for-pin compatible with the bt878/879, and adds enhanced performance capabilities in video and broadcast communication services. fusion 878a addresses the current analog tv requirements as well as the evolving digital tv broadcast standards like atsc (american television standards committee) and dvb (digital video broadcast). the fusion 878a is pc 98 and pc 99 compliant. also, fusion 878a conforms to the advance con?guration power interface (acpi) and power management requirements outlined in the pci bus power management speci?cation 1.0. fusion 878a integrates more of the external biasing circuitry, which reduces the overall bill of materials and improves performance characteristics of video and clocking. this enables customers to develop cost-effective, yet ?exible solutions addressing analog and digital video. pcl video decoder fusion ? 878a conexant systems
pcl video decoder fusion 878a digital infotainment products general features because fusion 878a is fully compatible with the current bt878/879, upgrading to requirements like pc 98/99 compliance is a minimal investment. also, customers can standardize with one pci video decoder to enable multiple con?gurations of tv cards that address the broad spectrum of broadcast requirements around the world. because fusion 878a is based on the bt878/879, customers can continue to support their products using one software code base, adding functionality by including additional software modules. features bt878 fusion 878a all bt848a features x x mono audio x x dvcr x x pc 99 compliance x atsc digital tv x dvb x transport stream dma for digital television the analog and digital audio paths have been modi?ed for increased bandwidth and functionality. the asynchronous parallel port, which uses the analog data path, has an increased raw data rate of 20 mbps. additionally, the i 2 s port has been modi?ed to handle data up to 40 mbps. this added functionality makes fusion the ideal choice for atsc, dvb, dbs, and digital cable platforms on the pc. driver software is available to move transport packet streams from a wide variety of digital demodulators to host memory using the fusion 878a dma engine. therefore, building next-generation digital broadcast solutions on the proven bt878 platform is easy and low risk since the software is incremental to existing fusion software. pc 99 compliance acpi and power management interface fusion 878a supports acpi and the power management interface 1.0 speci?cations, making the fusion 878a the product of choice for green pc and notebook applications. vital product data vital product data (vpd) is required by pci speci?cation version 2.2. through the fusion 878a and the use of an external eeprom, manufacturers can store information that identi?es the product down to the serial number. the data is stored in ascii format and is accessible through the con?guration space vpd interface registers. this feature provides board manufacturers and pc oems the ability to more accurately track their product as well as offer improved or enhanced customer support. worldwide video support the fusion family supports all the features and ?exibility of the bt848a video solution, including the integration of a ntsc/pal/secam composite and s-video decoder, high-quality scaler, and pci bus conexant systems
master on a single device. like the bt848a, the fusion family can place video data directly into host memory for video capture applications and into a target video display frame buffer for video overlay applications. fusion software drivers fusion offers a suite of widely ?elded software drivers for windows 95 and windows 98. with the vxd drivers, board developers can support products using either the windows 95 or windows 98 operating systems. vxd and wdm drivers provide video capture, playback and display in accordance with microsofts video for windows and direct show 2.0, respectively. dialog boxes, tuner, gpio, and i 2 c modules can be modi?ed and customized by board developers. fusion software drivers are supported by the industrys broadest base of isv applications commercially available for video editing, teleconferencing, compression, television on the pc and video email. software is available through retail and oem channels. fusion 878a mpeg ii all format decoder (optional) bt869 (optional) analog and digital tuner i 2 c composite and s-video ofdm dvb atsc i 2 s ccir 601 analog audio/video in digital audio/ video in gpio graphics memory system memory pci bus disk digital rgb out analog rgb/vga what is a pci video decoder? a pci bus analog video decoder is used for three primary pc solutions: video capture and editing, video teleconferencing, and television receiver cards. a video signal is generated by a video source, which can be a camera,vcr or tv tuner. the baseband video that goes into the pci decoder is a simple analog signal that contains video analog data and video synchronization data, which is used to display the picture properly at the receiving end. the details of the signal depend on the video standard used ntsc (national television standards committee), pal (phase alternate line) or secam (systeme electronique couleur avec memoire). to transmit the picture, the source generates a vertical synchronization signal (vsync). this signal resets the receiver (pc monitor) so that it begins picture display at the top of the screen. after the vsync signal is sent, the video source scans the ?rst line of the image. once the scan line is complete, the camera generates a horizontal synchronization signal (hsync), which resets the receiver so that it will display the next line starting at the left-hand edge of the display. for each line of the image, a scan line and a horizontal synchronization pulse are sent. the pci bus attached to the video decoder is the access mechanism, or hub, for this video information traveling to the pc. the need for broadcast data in the pc is a primary reason analog dedicated pc television receiver cards are becoming very popular. the introduction of webtv for windows and national broadcaster support of vertical blanking interval (vbi) content contribute to addressing the need for a feature rich, broadcast data function in the pc. pci video decoder solutions provide the most effective means to achieve this. digital television receiver for the pc conexant systems
features and specifications ultralock ? and scaling support fusion 878a, like the bt848a, bt878, and bt879, utilizes conexants patented ultralock technology that locks to an incoming analog video signal. ultralock is able to recognize unstable video signals caused by vcr headswitches or any other video source, and adapt the locking mechanism to accommodate the source. fusion is able to scale the video image size both vertically and horizontally, using arbitrarily-selected scaling ratios. the x and y dimensions can be scaled to one-sixteenth of full resolution. vertical scaling is implemented with conexants industry-leading 5-tap vertical ?lter. byte alignment byte alignment is used to improve video performance in packed color modes. often, video applications are written around the planar, not the packed color mode of operation. the result is video which is not dword aligned. to the end user, the color of the video appears misrepresented, showing more r, g, or b (red, green, or blue) than is actually there. fusion compensates for non-dword aligned data by aligning each dword with the correct byte lanes in the targeted address. product features ? supports multistandard ntsc/pal/secam video decoding ? two dma channels for simultaneous transmission of digital video and/or hdtv/ audio/mpeg2 transport data across pci bus ? supports downstream hdtv transport data via dma at rates of 40 mbps in serial mode and 20 mbps in parallel mode ? can interface to vsb or ofdm demodulators ? selectable pixel density available - 8, 16, 24, and 32-bits per pixel ? supports planar yuv, ycrcb, rgb pixel data formats ? supports complex clipping of video source and vga video overlay if needed ? executes windows 98 scatter and gather ? 4 composite and 1 s-video inputs concurrently ? chroma and luma comb ?lters/scalers ? horizontal scaling and vertical cropping ? filters and scales y/c video with a 6-tap luma/2-tap chroma polyphase circuit block ? vbi data capture circuitry and software for closed captioning and teletext ? accepts mono line level and mic audio signals ? supports microsofts direct sound api ? performs audio capture without additional analog audio cable to sound card ? pci rev. 2.2 compliant ? whql-certi?able ? packaged in compact 128-pin plastic qfp ? pc 98/99 compliant bene?ts ? worldwide support for all television standards ? whql certi?cation ? drop-in replacement for the bt878 and bt879 ? preserves customers existing software investment in drivers and applications ? supports the transport stream dma for atsc and dvb digital broadcast as well as hardware digital vcr solutions applications ? television on the pc ? pc radio ? webtv for windows ? dtv ? dbs ? digital cable ? video email, video editing and video phone ? motion video and still frame capture ? vbi data services capture (teletext/nabits) www.conexant.com further information literature@conexant.com (800) 854-8099 (north america) (949) 483-6996 (international) order # 100532b 00-0416 digital infotainment printed in usa world headquarters conexant systems, inc. 4311 jamboree road newport beach, ca 92660-3007 phone: (949) 483-4600 fax 1: (949) 483-4078 fax 2: (949) 483-4391 americas u.s. northwest/paci?c northwest C santa clara phone: (408) 249 -9696 fax: (408) 249 -7113 u.s. southwest C los angeles phone: (805) 376 -0559 fax: (805) 376 - 8180 u.s. southwest C orange county phone: (949) 483-9119 fax: (949) 483-9090 u.s. southwest C san diego phone: (858) 713-3374 fax: (858) 713-4001 u.s. north central C illinois phone: (630) 773-3454 fax: (630) 773 -3907 u.s. south central C texas phone: (972) 733-0723 fax: (972) 407- 0639 u.s. northeast C massachusetts phone: (978) 367-3200 fax: (978) 256 - 6868 u.s. southeast C north carolina phone: (919) 858 -9110 fax: (919) 858 - 8669 u.s. southeast C florida/ south america phone: (727) 799 - 8406 fax: (727) 799 - 8306 u.s. mid-atlantic C pennsylvania phone: (215) 244- 6784 fax: (215) 244- 9292 canada C ontario phone: (613) 271-2358 fax: (613) 271-2359 eur ope europe central C germany phone: +49 89 829 -1320 fax: +49 89 834-2734 europe north C england phone: +44 1344 486444 fax: +44 1344 486555 europe C israel/greece phone: +972 9 9524000 fax: +972 9 9573732 europe south C france phone: +33 1 41 44 36 51 fax: +33 1 41 44 36 90 europe mediterranean C italy phone: +39 02 93179911 fax: +39 02 93179913 europe C sweden phone: +46 (0) 8 5091 4319 fax: +46 (0) 8 590 041 10 europe C finland phone: +358 (0) 9 85 666 435 fax: +358 (0) 9 85 666 220 asia C paci? c taiwan phone: (886 -2) 2-720-0282 fax: (886 -2) 2-757- 6760 australia phone: (61-2) 9869 4088 fax: (61-2) 9869 4077 china C central phone: 86 -21- 6361-2515 fax: 86 -21- 6361-2516 china C south phone: (852) 2 827- 0181 fax: (852) 2 827- 6488 china C south (satellite) phone: (86) 755 -5182495 china C north phone: (86 -10) 8529 - 9777 fax: (86 -10) 8529 - 9778 india phone: (91-11) 692-4789 fax: (91-11) 692 -4712 korea phone: (82-2) 565-2880 fax: (82-2) 565-1440 korea (satellite) phone: (82-53) 745-2880 fax: (82-53) 745-1440 singapore phone: (65) 737 7355 fax: (65) 737 9077 japan phone: (81-3) 5371 1520 fax: (81-3) 5371 1501 conexant and the conexant symbol are trademarks of conexant systems, inc. conexant systems
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