tw2 8 67 4 - channel video decoders and audio codecs for security applications fn 7 748 rev. 0.00 page 1 of 2 december 8, 2010 fn7 7 48 rev. 0.00 december 8, 2010 data sh o r t t he TW2867 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 chan nel contains 10 - bit adc and proprietary clamp and gain controllers and utilizes 4h comb filter for separating luminance and chrominance to reduce cross noise artifacts. the TW2867 adopts the image enhancement techniques such as if compensation filter, cti and programmable peaking. the TW2867 also includes audio codec , which has five audio analog - to - digital converters and one digital - to - analog converter. a built - in audio controller can generate digital outputs for recording/mixing and accepts digital input f or 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 all 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 multi channel 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 ? supports a two - wire serial h ost interface ? integrated clock pll for 108mhz clock output ? ultra low power consumption ( typical 431.88mw) ? 128 pin lqfp package to request the full datasheet, please visit www.intersil.com/products/TW2867 obsolete product recommended replacement parts TW2867 c, tw2984, tw2964, tw2965
t w2867 for additional products, see www.intersil.com/product_tree intersil products are manufactured, assembled and t ested 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 desc ription 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 th e product. accordingly, the read er 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 infringem ents of patents or other rights of third parties which may result from its use. no license is granted by implication or other wise under any patent or patent rights of intersil or its subsidiaries. for information regarding intersil corporation and its pro ducts, see http://www.intersil.com fn7748 rev. 0.00 page 2 of 2 december 8, 2010 block diagram ? copyright intersil americas llc 20 10 . 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 x t o
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