Muaj ntau hom LCD interfaces, thiab kev faib tawm yog qhov zoo heev.Feem ntau yog nyob ntawm kev tsav tsheb thiab tswj hom ntawm LCD.Tam sim no, muaj ntau hom xim LCD sib txuas ntawm lub xov tooj ntawm tes: MCU hom, RGB hom, SPI hom, VSYNC hom, MDDI hom, thiab DSI hom.MCU hom (tseem sau hauv MPU hom).Tsuas yog TFT module muaj RGB interface.Txawm li cas los xij, daim ntawv thov yog ntau hom MUC thiab RGB hom, qhov sib txawv yog raws li hauv qab no:
1. MCU interface: Cov lus txib yuav raug txiav txim siab, thiab lub tshuab hluav taws xob lub sijhawm yuav tsim cov cim lub sijhawm kom tsav COM thiab SEG tsav tsheb.
RGB interface: Thaum sau LCD sau npe teeb tsa, tsis muaj qhov sib txawv ntawm MCU interface thiab MCU interface.Qhov txawv tsuas yog txoj kev sau cov duab.
2. Hauv MCU hom, txij li cov ntaub ntawv tuaj yeem khaws cia hauv GRAM sab hauv ntawm IC thiab tom qab ntawd sau rau ntawm lub vijtsam, hom LCD no tuaj yeem txuas ncaj qha rau lub npav MEMORY.
Nws txawv thaum siv RGB hom.Nws tsis muaj RAM sab hauv.HSYNC, VSYNC, ENABLE, CS, RESET, RS tuaj yeem txuas ncaj qha rau GPIO chaw nres nkoj ntawm MEMORY, thiab GPIO chaw nres nkoj yog siv los simulate waveform.
3. MCU interface hom: Cov ntaub ntawv tso saib tau sau rau DDRAM, uas feem ntau siv rau cov duab tseem ceeb.
RGB interface hom: tso saib cov ntaub ntawv tsis yog sau rau DDRAM, ncaj qha sau npo, ceev, feem ntau siv los tso saib video lossis animation.
MCU hom
Vim nws tsuas yog siv nyob rau hauv daim teb ntawm ib leeg-chip microcomputers, nws muaj npe tom qab nws.Nws yog dav siv nyob rau hauv low-end thiab mid-range mobile xov tooj, thiab nws lub ntsiab feature yog hais tias nws yog pheej yig.Tus qauv terminology rau MCU-LCD interface yog Intel tus qauv tsheb npav 8080, yog li I80 siv los xa mus rau MCU-LCD npo hauv ntau cov ntaub ntawv.Feem ntau tuaj yeem muab faib ua 8080 hom thiab 6800 hom, qhov sib txawv tseem ceeb ntawm ob yog lub sijhawm.Cov ntaub ntawv me ntsis kis tau tus mob muaj 8 ntsis, 9 ntsis, 16 ntsis, 18 ntsis, thiab 24 ntsis.Kev sib txuas tau muab faib ua: CS /, RS (xaiv xaiv), RD /, WR /, thiab tom qab ntawd cov ntaub ntawv kab.Qhov zoo dua yog tias kev tswj tau yooj yim thiab yooj yim, thiab tsis tas yuav tsum muaj lub moos thiab synchronization teeb liab.Qhov tsis zoo yog tias nws raug nqi GRAM, yog li nws nyuaj rau ua tiav lub vijtsam loj (3.8 lossis ntau dua).Rau LCM ntawm MCU interface, lub nti sab hauv hu ua tus tsav tsheb LCD.Lub luag haujlwm tseem ceeb yog hloov cov ntaub ntawv / lus txib xa los ntawm tus tswv tsev rau hauv RGB cov ntaub ntawv ntawm txhua pixel thiab tso rau ntawm qhov screen.Cov txheej txheem no tsis tas yuav tsum tau taw tes, kab, lossis ncej moos.
SPI hom
Nws yog siv tsawg dua, muaj 3 kab thiab 4 kab, thiab kev sib txuas yog CS /, SLK, SDI, SDO plaub kab, kev sib txuas me me tab sis kev tswj software yog qhov nyuaj dua.
DSI mode
Hom no serial bidirectional high-speed hais kom ua kis tau tus mob hom, kev sib txuas muaj D0P, D0N, D1P, D1N, CLKP, CLKN.
MDDI hom (MobileDisplayDigitalInterface)
Qualcomm's interface MDDI, tau tshaj tawm hauv xyoo 2004, txhim kho lub xov tooj ntawm tes kev ntseeg tau thiab txo qis kev siv hluav taws xob los ntawm kev txo cov xaim, uas yuav hloov SPI hom thiab dhau los ua kev sib txuas ceev ceev rau txawb.Kev sib txuas yog feem ntau host_data, host_strobe, client_data, client_strobe, hwj chim, GND.
RGB hom
Lub vijtsam loj siv ntau hom, thiab cov ntaub ntawv xa tawm me ntsis kuj muaj 6 khoom, 16 khoom thiab 18 khoom, thiab 24 khoom.Kev sib txuas feem ntau suav nrog: VSYNC, HSYNC, DOTCLK, CS, RESET, thiab qee qhov kuj xav tau RS, thiab tus so yog cov ntaub ntawv kab.Nws qhov zoo thiab qhov tsis zoo yog qhov txawv ntawm MCU hom.
Post lub sij hawm: Jan-23-2019