www .techw ellinc .c om nt sc/p al/sec am video d ec oder f or p or table a pplica tions nt sc/p al/sec am video d ec oder f or p or table a pplica tions mobile phone p or table m edia pla y er p or table dvd pla y er pic tur e in p ic tur e (pip) dec oder dvd r ec or der t ech w ell t ech w ell t ar g et a pplica tions f ea tur es f ea tur es video dec o der t he t w9910 is a lo w po w er nt sc/p al/secam video dec o der chip that is designed f or p or table applications . i t c onsumes less than 100mw in t ypical c omposit e input application. t he a v ailable po w er do wn mode fur ther r educ es the p o w er c onsumption. i t uses the 1.8v f or b oth analog and digital supply v oltage and 3.3v f or i/o p o w er . a single 27mhz cr y stal is all t he video dec o der dec odes the base-band analog cvbs or s-video signals int o digital 8 or 16-bit 4:2:2 y cbcr f or output. i t c onsists of analog fr ont- end with input sour c e selec tion, v ariable gain amplifier and analog-t o- digital c on v er t ers , y/c separ a tion cir cuit , multi-standar d c olor dec o der (p al bghi, p al m, p al n, c ombination p al n, nt sc m, nt sc 4.43 and secam) and synchr onization cir cuitr y . t he y/c separ ation is done with high qualit y adaptiv e 4h c omb filt er f or r educ ed cr oss c olor and cr oss luminanc e . t he adv anc ed synchr onization pr o c essing cir cuitr y c an pr oduc e stable pic tur es f or non-standar d signal as w ell as w eak signal. a video scaler is pr o vided t o arbitr arily scale do wn the output video in a pack ed f ormat. t he output of the dec oder is line-lock ed and f ormatt ed t o the itu-r 656 output with t he t w9910 also includes cir cuits t o det ec t and pr oc ess v er tical blank ing int er v al ( vbi) signal. i t slic es and pr oc ess vbi data f or output thr ough video bus . some inf ormation c an also b e alt ernativ ely r etriev ed thr ough host int er fac e . i t also det ec ts c op y-pr ot ec t ed signal acc or ding t o m acr o vision a 2-wir e serial host int er fac e is used t o simplify syst em int egr ation. all t he t w9910 nt sc (m, 4.43) and p al (b , d , g, h, i, m, n, n c ombination), p al (60), secam suppor t with aut omatic f ormat det ec tion sof t war e selec table analog inputs allo ws an y of the f ollo wing c ombinations , e .g . 4 cvbs or ( 3 cvbs and 1 y/c ). built-in analog anti-aliasing filt er t w o 9-bit adcs and analog clamping cir cuit f ully pr ogr ammable static gain or aut omatic gain c ontr ol f or the y channel p r ogr ammable whit e p eak c ontr ol f or the y channel l o w p o w er nt sc/p al/secam v ideo d ec o der with vbi slic er techwell video decoders embedded sync . standar d including a gc and c olorstripe pulses . func tions c an be c ontr o lled thr ough this int er fac e . that needed t o dec ode all analog video standar ds . video p r oc essing 4-h adaptiv e c omb filt er y/c separ ation p al dela y line f or c olor phase err or c orr ec tion image enhanc ement with peak ing and cti digital sub-carrier pll f or accur at e c olor dec oding digital horiz ontal pll f or synchr onization pr oc essing and pix el sampling a d v anc ed synchr onization pr oc essing and sync det ec tion f or handling non-standar d and w eak signal p r ogr ammable hue , brightness , satur ation, c ontr ast , and sharpness a ut omatic c olor c ontr ol and c olor k iller chr oma if c ompensation d et ec tion of lev el of c opy pr ot ec tion acc or ding t o m acr o vision standar d te c hwe ll te c hwe ll t w 991 0 t w 991 0 tv tuner ntsc/pal secam TW9910 601/ 656 preliminar y block diagr am composite s-video
techwell inc. tel 1-408-435-3888 www.techwellinc.com TW9910 block diagram miscellaneous two wire mpu serial bus interface support real time control interface power save and power down mode typical power consumption < 100mw single 27mhz crystal for all standards supports 24.54mhz and 29.5mhz crystal for high resolution square pixel format decoding 3.3 v tolerant i/o 1.8v/3.3 v power supply 48-pin qfn or 44-pin lqfp package techwell f or mor e inf ormation on t echw ell, please c ontac t us a t 1-408-435-3888 ? 2006 t echw ell inc . a ll rights r eser v ed . all other tr ademarks ar e pr oper t y of their r espec tiv e o wners about t echw ell t echw ell is a fabless semic onduc t or c ompan y that designs , mark ets and sells mix ed signal int egr at ed cir cuits f or multiple digital video applications in the c onsumer , securit y sur v eillanc e and aut omotiv e mark ets , including adv anc ed t vs , multifunc tion l cd monit ors ,dvd rec or ders , securit y sur v eillanc e syst ems and in-car l cd displa ys . f ounded in 1997,w e curr ently ha v e o v er 70 emplo y ees and ar e headquar t er ed in s an jose ,c alif ornia, with additional r&d and sales ac tivities in south k or ea, japan,t aiwan and china. video output itu-r 601 or itu-r 656 c ompatible y cbcr(4:2:2) output f ormat vbi slic er suppor ting industrial standar d data ser vic es vbi data pass thr ough, r a w adc data output t w9910 l o w p o w er nt sc/p al/secam v ideo d ec o der with vbi slic er nt sc/p al/sec am video dec o der f or p or table a pplica tions nt sc/p al/sec am video dec o der f or p or table a pplica tions mux0 mux1 mux2 mux3 analog video in 9-bit adc mux agc 9-bit adc vbi slicer cin0 clock line-lock clock generator 27mhz pdn sclk sdat 2w i r e serial bus 4h adaptive comb filter sync processor chroma demodulation luma/chroma processor scaling / video interface u v y vd (15:8) vd (7:0) hs vs clkx2 mpout video scaler high qualit y horiz ontal filt er ed scaling with arbitr ar y scale do wn r a tio phase accur ac y b ett er than 1/32 pix el s elec table anti-alias filt er v er tical do wn scaling b y line dr opping preliminar y
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