tw2 866 4 - channel video decoders and audio codecs and video encoder for security applications fn7747 rev. 0.00 page 1 of 2 december 17, 2010 fn7747 rev. 0.00 december 17, 2010 data sh o r t the TW2866 includes four high quality ntsc/pal/secam video decoders that convert analog composite video signal to digital component ycbcr data for security application s . each channel contains 10 - bit adc s and proprietary clamp and gain controllers and util izes 4h comb filter for separating luminance and chrominance to reduce cross noise artifacts. the TW2866 adopts the image enhancement techniques such as if compensation filter, cti and programmable peaking. TW2866 also includes one ntsc/pal video encoder w ith two 10 - bit dacs to support cvbs and yc output. the TW2866 also includes audio codec which has five audio analog - to - digital converters and one digital - to - an alog converter. a built - in audio controller can generate digital outputs for recording/mixing and accepts digital input for playback . features ? accepts all ntsc(m/4.43) / pal(b/d/g/h/i/k/l/m/n/60)/secam standards with auto detection ? integrated four video analog anti - aliasing filters and 10 - bit cmos adcs ? high performance adaptive 4h comb filters for a ll ntsc/pal standards ? if compensation filter for improvement of color demodulation ? color transient improvement (cti) ? automatic white peak control ? programmable hue, saturation, contrast, brightness and sharpness ? proprietary fast video locking system for non - realtime application ? supports the standard itu - r bt.656 format or time multiplexed output with 54/108mhz ? provides simultaneous four channel full d1 and cif time - multiplexed outputs with 54mhz ? integrated five audio adcs and one audio dac ? provides multichan nel audio mixed analog output ? supports i2s/dsp master/slave interface for record output and playback input ? pcm 8 - /16 - bit and u - law/a - law 8 - bit for audio word length ? programmable audio sample rate that covers popular frequencies of 8/16/32/44.1/48khz ? suppor ts a two - wire serial host interface ? integrated one video encoder and two 10 - bit video cmos dacs ? integrated clock pll for 108mhz clock output ? ultra low power consumption ( typical 666.84mw) ? 128 pin lqfp package to request the full datasheet, please visit www.intersil.com/products/TW2866 obsolete product recommended replacement parts TW2866c, tw2984, tw2964, tw2965
TW2866 for additional products, see www.intersil.com/product_tree intersil products are manufactured, assembled and tested utili zing 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 onl y. 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 cauti oned to verify that datasheets are current before placing orders. information furnished by intersil is believed to be accurat e and reliable. however, no responsibility is assumed by intersil or its subsidiaries for its use; nor for any infringements of pat ents or other rights of third parties 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 fn7747 rev. 0.00 page 2 of 2 december 17, 2010 block diagram ? copyright intersil americas llc 20 1 0. all rights reserved. all trademarks and registered trademarks are the property of their respective owners. v d 3 [ 7 : 0 ] i 2 s i n t e r f a c e b t . 6 5 6 i n t e r f a c e m p p i n t e r f a c e m p p 1 a c l k r v d 1 [ 7 : 0 ] v d 2 [ 7 : 0 ] v d 4 [ 7 : 0 ] m p p 2 m p p 3 m p p 4 a s y n r a d a t r a d a t m a o u t a c l k p a s y n p a d a t p a d c 4 h c o m b v i d e o d e c o d e r d e c i m a t i o n f i l t e r a d c a d c 4 h c o m b v i d e o d e c o d e r d e c i m a t i o n f i l t e r a d c c l o c k p l l c l o c k g e n e r a t o r c l k p o n x t i c l k n o n h o s t i n t e r f a c e s c l k s d a t i r q a d c 4 h c o m b v i d e o d e c o d e r d e c i m a t i o n f i l t e r a d c a d c 4 h c o m b v i d e o d e c o d e r d e c i m a t i o n f i l t e r a d c a d c 4 h c o m b v i d e o d e c o d e r d e c i m a t i o n f i l t e r a d c a d c 4 h c o m b v i d e o d e c o d e r d e c i m a t i o n f i l t e r a d c a d c 4 h c o m b v i d e o d e c o d e r a d c a d c 4 h c o m b v i d e o d e c o d e r m u x m u x m u x m u x v i n 1 a v i n 1 b v i n 2 a v i n 2 b v i n 3 a v i n 3 b v i n 4 a v i n 4 b a i n 3 a i n 2 a i n 1 a d c a i n 4 a i n 5 a d c d e c i m a t i o n f i l t e r d e c i m a t i o n f i l t e r d a c i n t e r p o l a t i o n f i l t e r d i g i t a l v i d e o e n c o d e r d a c d a c v y o u t v c o u t e n c l k e d [ 7 : 0 ] x t o
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