tw2 8 34 4 - channel video quad/mux controller for security applications fn 7 7 39 rev. 0.00 page 1 of 2 february 1, 2011 fn7 7 39 rev. 0.00 february 1, 2011 data sh o r t 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 video display controller including basic quad and mux functions. the TW2834 also has an excellent graphic overlay function that displays ch aracter/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 - video. 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 improvement of color demodulation ? pal delay lines for correcting pal phase errors ? programmable hue, saturation, contrast, brightn ess 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 fo r playback with itu - r bt.656 standard ? auto cropping/ strobe for playback input with channel id decoder ? supports 4 - channel full d1 record and playback mode dual video controllers ? full live/strobe/switch function ? various channel attribute control ? supports pse udo 8 - channel or dual page mode ? horizontal/ vertical mirroring for each channel ? last image capture when video - loss detected ? auto sequence switch with 128 queues and/or manual switch by interrupt for record path ? channel skip in auto sequence switch for recor d path when video - loss detected ? image enhancement for zoomed or still image in display path features (continued) to request the full datasheet, please visit www.intersil.com/products/TW2834 not recommended for new designs recommended replacement part tw 2837
t w2834 for additional products, see www.intersil.com/product_tree intersil products are manufactured, assembled and tested utilizing iso9001 quality systems as noted in the quality certifications found at http://www.intersil.com/en/support/qualandreliability.html intersil products are sold by description only. intersil may modify the circuit design and/or specifications of products at any time without notice, provided that such modification does not, in intersil's sole judgment, affect the form, fit or function of the product. accor dingly, the reader is cautioned to verify that datasheets are current before placing orders. information furnished by intersil is believed 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 ot her rights of third parti es which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of intersi l or its subsidiaries. for information regarding intersil corporation and its products, see http://www.intersil.com fn7739 rev.0.00 page 2 of 2 february 1, 2011 ? 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 boxe s overlay ? four 2d arrayed boxes overlay with dual color for motion result or table display ? mouse pointer overlay ? analog/ digital channel id encoder dual video encoders ? dual path digital outputs with itu - r bt.656 standard ? dual path analog outputs with all an alog ntsc/pal standards ? programmable bandwidth of luminance and chrominance signal for each path ? four 10 - bit video cmos dacs block diagram ? copyright intersil americas llc 20 1 1 . all rights reserved. all trademarks and registered trademarks are the property of their respective owners. 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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