techwell techwell lcd display processors lcd display processors target applications target applications techwell?s TW8807 lcd display processor is a low cost high quality tft panel controller with an embedded ntsc/pal/secam tv decoder, scaler, de-interlacer and timing controller. it is designed to support analog panels used in video applications including portable tv, rear seat car display, and the TW8807 contains all the logic required to convert standard tv signals to the digital control and data signals required to drive various tft panel types. it supports tft panel resolutions up to wqvga (480x234) with the chip accepts cvbs (composite) analog input or s-video analog input for use as a video monitor. up to four physical cvbs inputs or one s-video the integrated analog front-end contains two adcs with two clamping circuits and one automatic gain control (agc) circuit to minimize external component count. it employs a 4h, 5-line adaptive comb filter 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 the lower resolution formats to the output panel resolution. an internal de- interlacing engine also allows interlaced video to be supported. on screen display is supported through an on chip osd ram. the TW8807 also supports tft panel power sequencing, dpms (vesatm display power management signaling) signaling and power management. the control interface is a 2-wire serial bus interface. the TW8807 core operates at 1.8 v, the io at 3.3 v and is packaged in a 64-pin pqfp package. TW8807TW8807 portable tv rear seat car display portable dvd navigation + dvd door phone dmb tv in flight display lcd controller with built-in video decoder and tcon for analog lcd panels lcd controller with built-in video decoder and tcon for analog lcd panels featuresfeatures quality pictures. integrated high performance ntsc/pal/secam video decoder built in high quality de-interlacing engine black / white / blue stretch for higher contrast favorite color enhancement integrated timing controller (t-con) with analog panel support qvga panel resolution support low power consumption (250 mw) small form factor 64-pin pqfp video decoder and processing video decoder and processing two 9-bit adcs and analog clamping circuit fully programmable static gain or automatic gain control for the y or cvbs channel programmable white peak control for the y or cvbs channel software selectable analog inputs allows any of the following combinations: up to 4 composite video up to 1 s-video and 3 composite 4-h adaptive comb filter y/c separation image enhancement with 2d dynamic peaking and cti programmable hue, brightness, saturation, contrast, sharpness, gamma control, and noise supression detection of level of copy protection according to macrovision standard techwell display 1-pixel/clock formats. portable dvd. input can be connected.
t ech w ell l cd d ispla y p r o c essor l cd d ispla y p r o c essor 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 , d vd 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 80 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. nasda q: t wll t w8807 l cd c ontr oller with built-in v ideo d ec o der and t c on f or analog l cd p anels tft p anel suppor t suppor ts analog l cd panels suppor ts a wide v ariet y of ac tiv e matrix tft panels one pix el per clock suppor ts panel with r esolution up t o wqvga (480x234) suppor ts 3, 4, 6 or 8 bits p er pix el up t o 16.8 million c olors suppor ts non-linear scaling 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 suppor t analog r gb output p r ogr ammable v c om output dual channel char ge pump output with back sensing m isc ellaneous suppor ts 2-wir e serial bus int er fac e spr ead spec trum pll 5v t o ler a nt i/o p o w er-do wn mode single 27mhz cr ystal 64-pin pqfp pack age t w8807 block diagr am cin0 3 x an a log fron tend yuv proce s sing yin0 yin1 yin2 yin3 mux s y n c proce s so rs c hroma d emodulation 4h adap t ive comb fi lt er co lorm a tri x l i n e b u ffe rs s c a ler/de i n te rlace r ima g e enh a n cem e n t ga m m a/dithe r i n p u t fo rmat m e a su re m e n t p a n e lt imingg e n e rator 2w i re ser ia lb u s a l p h ab len d i n g o s d mc sda mc scl mc sia t c o n tcon signals triple dac rout gout bout y+co u t
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