www.techwellinc.com lcd flat panel controller lcd flat panel controller the TW8804 lcd flat panel controller is a low cost high quality tft panel controller with an embedded ntsc/pal/secam tv decoder. this unique level of mixed signal integration enables the panel to be used as a stand-alone analog tv. an integrated ypbpr/rgb component input allows direct connection to dvd, pip and ttx sources. separate digital inputs allow it to be used as a high quality computer monitor when combined with additional ics. it incorporates easy-to-operate and powerful features in a single package for lcd tv, multi-purpose lcd monitor, portable dvd the TW8804 contains all the logic required to convert standard tv, dtv, and pc monitor signals to the digital control and data signals required to drive various tft panel types. it suppo rts tft panel resolutions up to 1280 by 1024 (sxga/wxga) with either 1 or 2-pixel/clock formats. the chip accepts cvbs (composite) analog input or s-video analog input or ypbpr input for use as a video monitor. up to four physical cvbs inputs or one s-video input or one component input can be connected synchronously with component (rgb or ypbpr) input via fast blanking and switched internally under external microprocessor control. the integrated analog front-end contains six adcs with ve clamping circuits and one automatic gain control (agc) circuit to minimize external component count. it employs a 2/4h, 5-line adaptive comb lter and proprietary y/c processing technologies to produce exceptionally high the chip's internal logic synchronizes the panel frame rate to the incoming input frame rate. a high quality image-scaling engine is used to convert th e lower resolution formats or high resolution dtv formats to the output panel resolution. an internal de-interlacing engine also allows interlaced on screen display is supported through either external osd chip or on- chip osd ram for maximum exibility. a closed caption decoder is built in. the TW8804 also accepts a 24 bit digital rgb input from external panellinktm receiver or adcs for use as computer monitor. in addition, it accepts 8/16/24 bits digital ycbcr input for use with external adcs for use the TW8804 also supports tft panel power sequencing, dpms display power management signaling) signaling and power management. the control interface is a 2-wire serial bus interface. the TW8804 core operates at 2.5 v, the io at 3.3 v and is packaged in a 160-pin pqfp package. 4088wt 4088wt lcd tv lcd monitor with tv car tv portable dv d players techwell techwell t ar g et a pplica tions t ar g et a pplica tions f ea tur es f ea tur es l c d f lat p anel c o ntr o ller with int e gr at ed nt sc/p al/secam d ec o der and analog/digital rgb/fb input l c d f lat p anel c o ntr o ller with int e gr at ed nt sc/p al/secam d ec o der and analog/digital rgb/fb input techwell displ a y pla y ers and c a r d ispla y e nt er tainment s y st ems . qualit y pic tur es . video t o be suppor t ed . as a dt v monit or . f ea tur es f ea tur es l o w angle c ompensation cir cuit f or smooth video r endering black/whit e/blue str et ch f or higher c ontr ast sharpness c ontr ol f or sharper video p a nor a ma/wat er glass f e atur e f or mor e natur al scaling int egr at ed osd with 200+ user defined fo n t s int egr at ed pr ogr a mmable timing c ontr oller ( t c on)
t w8804 block diagr am l cd f la t p anel c on tr oller l cd f la t p anel c on tr oller t w8804 l cd f lat p anel c ontr oller with int egr at ed nt sc/p al/secam d ec o der and analog/digital rgb/fb input t ech w ell yin0 yin1 yin2 yin3 yin4 mux 2x analog front e nd cin chroma d emodulation 4 h a daptive comb filter yuv processing syn c processor yout dechs decvs fb0 fb1 rin0 rin1 gin0 mux mux mux mux gin1 bin0 bin1 4x adc c omponent p r ocessor vcom vrefn vrefp dtvclk dtvvs dtvhs dtvde dtvd [23:0] coast dtv i/f s of t s witch mux co lo r m atrix co lor mat r ix l ine b uf fers s ca ler/ d e interla cer image e n hancement g a m m a/ d ither in p ut forma t m easu r emen t regis t ers p ane l tim ing g enerato r output form a t te r 2w i r e s e ri al bus tcon mu x a lpha blen ding osd o s d p d[2 :0] o s o s d p d e o s o clk osd v s y nc osdhs yn c fpr0 [ 7:0 ] fpg0 [7:0] fpb0 [7:0] fpr1 [ 7:0 ] fpg1 [7:0] fpb1 [ 7:0 ] fpvs fphs fpde fpclk fppwc fpbias mc sda mc scl mc sia
lcd flat panel controller TW8804 lcd flat panel controller with integrated ntsc/pal/secam decoder and analog/digital rgb/fb input techwell 24bit digital rgb and 8/16/24-bit y cbcr inputs allo ws c onnec tion t o analog pc g r aphics car ds with the addition of a 3 channel a/d c on v er t er f or up t o sx ga r esolution allo ws y cbcr digital c omponent input f or dt v 480p , 720p , 1080i f or c onnec tion t o digital pc gr aphics car ds (with the addition of a p anellinktm d vi int er fac e r ec eiv er) allo ws int erlac ed and pr ogr essiv e 656 input fr om dvd chips tft p anel suppor t suppor ts a wide v ariet y of ac tiv e matrix tft panels either one or tw o p ix els per clock suppor ts panel with r esolution up t o sx ga (1280 x 1024) suppor ts 3, 4, 6 or 8 bits p er pix el up t o 16.8 million c olors t iming c on tr oller ( t c on) suppor t pr o gr ammable int er fac e signals f or c ontr ol c olumn (sour c e) driv er / r o w (gat e) driv er a nalog video dec o der nt sc (m, 4.34) and p al (b , d , g, h, i, m, n, n c ombination), p al (60), secam with aut omatic f ormat det ec tion a d v anc ed synchr onization pr oc essing f or v cr fast f or w ar d , back war d , and pause mode six 9-bit adcs and analog clamping cir cuit f ully pr o gr ammable static gain or aut omatic gain c ontr ol f or the y or cvbs channel p r ogr ammable whit e p eak c ontr ol f or the y or cvbs channel sof t war e selec table analog inputs allo ws an y of the f ollo wing c ombinations: up t o 5 c omposit e video 1 s-v ideo up t o 1 r gb or ypbp r c omponent l c d t v l cd monit o r with t v car t v p or table d vd pla y ers
techwell inc. tel 1-408-435-3888 www.techwellinc.com for more information on techwell, please contact us at 1-408-435-3888 ? 2005 techwell inc. all rights reserved. all other trademarks are property of their respective owners video processing 4-h adaptive comb lter y/c separation pal delay line for color phase error correction image enhancement with 2d dynamic peaking and cti digital sub-carrier pll for accurate color decoding digital horizontal pll and advanced synchronization processing for non-standard video signals programmable hue, brightness, saturation, contrast, sharpness, gamma control, and noise suppression automatic color control and color killer high quality horizontal and vertical ltered scaling with arbitrary scale down ratio detection o evel of copy protection according to macrovision standard soft mixing process between component inputs and a cvbs input techwell m isc ellaneous suppor ts 2-wir e serial bus int er fac e 5v t o ler ant i/o p o w er-do wn mode t ypical po w er c onsumption 1w single 27mhz cr ystal 160-pin pqfp pack age about t echw ell t echw ell designs and sells mix ed signal semic onduc t or solutions f or digital video applications . t he c ompan y's pr oduc ts enable the c on v ersion of analog video sour c es t o digital f orm and facilitat e the displa y , st or age and tr anspor t of digital video , hdt v , and p ersonal c omput er displa y inf ormation. headquar t er ed in s an jose , c a, t echw ell curr ently has o v er 60 emplo y ees in the u.s., k or ea, and t aiwan. l cd f la t p anel c on tr oller l cd f la t p anel c on tr oller t w8804 l c d f lat p anel c o ntr o ller with int egr at ed nt sc/p al/secam d ec o der and analog/digital rgb/fb input image c on tr ol p r ogr ammable hue , brightness , satur ation, c ontr ast a ut omatic c olor c ontr ol and c olor k iller sharpness c ontr ol with v er tical peak ing up t o +12db p r ogr ammable c olor tr ansient impr o v ement c ontr ol suppor ts pr ogr ammable cr opping of input video and gr aphics high qualit y e xpansion f or lo w-r esolution gr aphics built-in de-int erlacing engine with pr oprietar y lo w angle c ompensation cir cuit f or smooth video r endering independent r gb gain and off set c ontr ols p anor ama / w at er-glass scaling dt v hue adjustment p r ogr ammable g amma c orr ec tion f or each c olor oper at ed in f r ame s ync mode only with no ex t ernal memor y r equir ed . built-in y cbcr t o r gb c olor spac e c on v er t er black/whit e/blue str et ch on scr een displa y built-in osd c ontr oller with int egr at ed char ac t er r om and pr ogr ammable ram f ont suppor ts dedicat ed por t f or an optional ex t ernal osd c o ntr oller p o w er m anagemen t suppor ts panel po w er sequencing suppor ts dpms f or monit or p o w er management 2.5 / 3.3 v oper a tion
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