february 1, 2011 1 fn7739.0 caution: these devices are sensitive to electrostatic discharge; follow proper ic handling procedures. 1 - 888 - intersil or 1 - 888 - 468 - 3774 | copyright intersil americas inc. 2011 . all rights reserved intersil (and design) is a trademark owned by intersil corporation or one of its subsidiaries. all other trademarks mentioned are the property of their respective owners. 4 - channel video quad/mux controller for security application s TW2834 the TW2834 has four high quality ntsc/pal video decoders, dual color display controllers and dual video encoders. the TW2834 contains four built - in analog anti - aliasing filters, four 10 - bit analog - to - digital converters, proprietary digital gain/clamp controller, high quality y/c separator to reduce cross - noise and high performance free scaler. four built - in motion and blind detectors can increase the feature of the security system. the TW2834 has a flexible vi deo display controller including basic quad and mux functions. the TW2834 also has an excellent graphic overlay function that displays character/bitmap for osd, single box, 2d array box and mouse pointer. the built - in channel id codec allows auto decoding and displaying during playback and the additional scaler on the playback supports multi cropping function of the same field or frame image. the TW2834 contains two video encoders with four 10 - bit digital - to - analo g converters for providing 2 composite or s - v ideo. the TW2834 also can be extended up to 8 - /16 - channel video controller using chip - to - chip cascade connection. applications ? analog quad/mux system ? 4 - /8 - /16 - channel dvr system ? car rear vision system ? hair shop system ? dental care system features four video decoders ? accepts all ntsc/pal standard formats with auto detection ? integrated four analog anti - aliasing filters and four 10 - bit cmos adcs ? high performance adaptive comb filters for all ntsc/pal standards ? if compensation filter for impr ovement of color demodulation ? pal delay lines for correcting pal phase errors ? programmable hue, saturation, contrast, brightness and sharpness ? high performance horizontal and vertical scaler for each path including playback input ? fast video locking system for non - realtime application s ? four built - in motion detectors with 16 x 12 cells and blind detectors ? additional digital input for playback with itu - r bt.656 standard ? auto cropping/ strobe for playback input with channel id decoder ? supports 4 - channel full d1 re cord and playback mode dual video controllers ? full live/strobe/switch function ? various channel attribute control ? supports pseudo 8 - channel or dual page mode ? horizontal/ vertical mirroring for each channel ? last image capture when video - loss detected ? auto seq uence switch with 128 queues and/or manual switch by interrupt for record path ? channel skip in auto sequence switch for record path when video - loss detected ? image enhancement for zoomed or still image in display path not recommended for new designs recommended replacement part tw 2837 to request the full datasheet, please visit www.intersil.com/products/TW2834
TW2834 all intersil u.s. products are manufactured, assembled and tested utilizing iso9001 quality systems. intersil corporations quality certifications can be viewed at www.intersil.com/design/quality. intersil products are sold by description only. intersil corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. accordingly, the reader is cautioned to verify that data sheets are current before placing orders. information furnished by intersil is believ e d to be accurate and reliable. however, no responsibility is assumed by intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may res ult from its use. no license is granted by implication or o therwise under any patent or patent rights of intersil or its subsidiaries. for information regarding intersil corporation and its products, see www.intersil.com features (continued) ? high performance 2 x zoom to horizontal and vertical direction for display path ? supports save and recall function for display path ? extendable up to 8 - /16 - channel video controller using cascade connection ? quad mux switch with 32 queues and/or manual control by interrupt for record path ? character/ bitmap overlay for osd wi th 720x480 resolution in ntsc/ 720x588 in pal ? sixteen programmable single boxes overlay ? four 2d arrayed boxes overlay with dual color for motion result or table display ? mouse pointer overlay ? analog/ digital cha nnel id encoder dual video encoders ? dual path digital outputs with itu - r bt.656 standard ? dual path analog outputs with all analog ntsc/pal standards ? programmable bandwidth of luminance and chrominance signal for each path ? four 10 - bit video cmos dacs block diagram pbclk pbin vdouty vin3b vin3a mux vin2b vin2a mux vin1b vin1a mux vin0b vin0a mux motion detect itu - r bt656 decoder voutyx addrx/ba1x/ba0x/rasbx/casbx/wenbx/dqmx/datax vdoutx voutcx 4 x 4 matrix memory interface itu - r bt656 encoder write control read control clock generator clk54i nmirq irq interface host interface voutyy voutcy clk27encx clk27ency hspb hcsb0 hcsb1 hale hrdb hwrb hdat encoder timing interface hsenc vsenc fldenc link addry/ba0y/rasby/casby/wenby/dqmy/datay channel id decoder video encoder osd box mouse overlay channel id encoder memory interface itu - r bt656 encoder write control video encoder read control scaler scaler motion detect scaler scaler motion detect scaler scaler motion detect scaler scaler video decoder video decoder video decoder video decoder 8 x 1 8 x 1 8 x 1 8 x 1 osd box mouse overlay zoom & image enhance
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