I-VGA Connector Pinout Guide | 15-Pin DE-15 Ukucushwa

Isingeniso

Iphinikhodi yesixhumi se-VGA isalokhu ingelinye lamazinga aqashelwa kabanzi esixhumi esibonakalayo sevidiyo ye-analog ekwakhiweni kwe-electronics. Ngaphandle koshintsho lwemboni oluya kubuchwepheshe bokuboniswa kwedijithali, ukuqonda ukulungiselelwa kwesixhumi se-VGA 15-pin kubalulekile ekunakekeleni isistimu yefa, izinhlelo zokusebenza zezimboni, namaphrojekthi wokubonisa ashumekiwe. Lo mhlahlandlela wobuchwepheshe uhlinzeka ngereferensi ebanzi yephiniuti yesixhumi se-VGA, izici zesignali ehlola, ukucatshangelwa komshini, kanye nezinqubo ezihamba phambili zokusetshenziswa kwe-PCB.

I-VGA Connector Pinout Basics

Isixhumi esibonakalayo se-Video Graphics Array sisebenzisa isixhumi esimisiwe se-DE-15, esiphinde sikhethwe njengesixhumi se-HD15 noma se-VGA 15-pin embhalweni wezobuchwepheshe. Lesi sixhumanisi sevidiyo ye-analog ye-RGB sidlulisela iziteshi ezimibalabala ezintathu ezihlukene eduze kwamasignali okuvumelanisa ngokusebenzisa ukucushwa okuhlangene kwamaphini angu-15. Isakhiwo sesixhumi sibhalansisa ukudluliswa kwevidiyo ye-analog yamashaneli e-RGB, amasignali okuvumelanisa edijithali okubonisa isikhathi, ukuxhumana kwe-DDC kusetshenziswa iphrothokholi ye-I²C, nokuxhumana okuningi okuphansi okunikeza isivikelo esifanele samasignali e-analog abucayi.

Qedela i-VGA 15-Pin Connector Pinout

Ukucushwa Kwephinikhodi Okujwayelekile

VGA Pinout Functional Amaqembu

Iphinikhodi yesixhumi se-VGA ihlela amasignali abe yizigaba ezine ezihlukene zokusebenza ukuze kuhlukaniswe kahle isignali:

• Izimpawu zevidiyo eziyisisekelo (Izikhonkwane 1-3) - Iziteshi ze-analog ze-RGB eziphethe amasiginali we-amplitude angu-0-0.7V wokukhiqiza umbala
• Ukulawula ukuvumelanisa (Izikhonkwane 13-14) - I-HSync yezinga le-TTL kanye ne-VSync pulses ixhumanisa isikhathi sokuvuselela isibonisi
• Ukuxhumana kwe-DDC (Izikhonkwane 12, 15) - I-interface ye-I²C evumela ukutholwa kokuqapha okuzenzakalelayo nokudluliswa kwedatha ye-EDID
• Inethiwekhi yaphansi (Amaphini 5-8, 10) - Izindlela zokubuya ezisabalalisiwe ezinciphisa i-crosstalk nokugcina ubuqotho besignali kuwo wonke amashaneli e-analog

Izinhlobo Zesiginali ye-VGA kanye Nezimpawu Zogesi

Ividiyo ye-Analog ye-RGB ku-VGA Pinout

Iphinikhodi yesixhumi se-VGA inikezela izikhonkwane ezintathu ekudluliselweni kwevidiyo ye-analogi, ngayinye igcina amazinga kagesi phakathi kuka-0 no-0.7 volts ukuphakama ukuya phezulu. Lawa masignali e-analog adinga ukunqanyulwa okungu-75-ohm ohlangothini lokubonisa ukuze kuvinjelwe ukubonakaliswa nokugcina ubuqotho be-waveform. I-voltage amplitude ihambisana ngokuqondile nokushuba kombala, okusekelwe phansi okufanele okubalulekile ekulondolozeni ububanzi obugcwele bokuguquguquka kuzo zonke iziteshi zombala ezintathu.

Ukucaciswa Kwesiginali Yokuvumelanisa

Izimpawu zokuvumelanisa ezivundlile neziqondile ku-VGA pinout zisebenza kumazinga anengqondo e-TTL, ngokuvamile angu-0V ukuya ku-3.3V noma 5V kuye ngokusetshenziswa kwesilawuli sezithombe. Imvamisa ye-HSync iyahluka ukusuka ku-31.5 kHz ku-VGA evamile iye phezu kuka-60 kHz ngokulungiswa okuphezulu, kuyilapho i-VSync ngokuvamile isukela ku-60 Hz iye ku-85 Hz. Le mingcele yesikhathi ichaza ukulungiswa okusekelwayo nezinhlanganisela zesilinganiso sokuvuselela zokusetshenziswa kubonwa kwevidiyo.

Ukuqaliswa Kwephrothokholi ye-DDC

Isiteshi sedatha sokubonisa esingaphakathi kwephinikhodi yesixhumi se-VGA sisebenzisa ukuxhumana okujwayelekile kwe-I²C kumafrikhwensi ewashi angu-100 kHz. Lesi sixhumanisi sifunda ukwakheka kwe-EDID kumemori ye-chip yesibonisi, equkethe izinqumo ezisekelwayo, imingcele yesikhathi, nolwazi lomkhiqizi. Amaphinikhodi e-DDC adinga izimbangi zokudonsela phezulu ezingu-4.7kΩ ekuhlinzekeni okungu-5V, ngokunqanyulwa kwesignali efanele okuqinisekisa ukuxhumana okuthembekile phakathi nokulandelana kokutholwa kokuqapha.

Ukucatshangelwa kwesakhiwo se-PCB se-VGA Connector Pinout

Ukuhlanganisa Mechanical

Izixhumi ze-VGA ezifakwe kwi-PCB zisebenzisa ukucushwa kwe-engeli yesokudla noma eqondile, ngayinye inemingcele ethile yomzila. Indlu yesixhumi idinga ukunamatheliswa kwe-PCB okuqinile kuzo zombili izikhonkwane zesignali kanye nezici zokufaka ngomshini. Ukufakwa kwegobolondo lensimbi kunikeza ukuvikelwa kwe-EMI okubalulekile, okudinga ukuxhumana okuqondile nendiza yomhlabathi ye-chassis yebhodi ngamathebhu okufaka azinikele agcina ukuqhubeka kukagesi ngaphansi kokucindezeleka ngomshini.

Izinkombandlela Zomzila Ezibalulekile ze-VGA Pinout

Ukulandelela kwe-Analog RGB kudinga ukunakwa ngokucophelela ukuze kugcinwe ikhwalithi yesiginali ekusetshenzisweni kwesixhumi se-VGA:

• Ukufanisa ubude bokulandelela - Gcina ubude obulinganayo bazo zonke iziteshi ezintathu ze-RGB ukuvimbela ukungahambi kahle kwesigaba sombala
• Ukulawulwa kwe-impedance - Amasiginali we-analog womzila njengama-75-ohm alawulwa yi-impedance trace nereferensi eqhubekayo yomhlaba
• Ukuhlukaniswa namasignali edijithali - Gcina imikhondo yevidiyo ye-analog okungenani i-20 ms kude nemigqa ye-HSync, VSync, ne-DDC
• Ngokunciphisa - Nciphisa i-vias ezindleleni zesiginali ye-analog ukuze unciphise amandla e-parasitic kanye nokunqanyulwa kwe-impedance

I-Ground Architecture ye-VGA Pinout

Uxhumano oluningi lwaphansi kuphinikhodi yesixhumi se-VGA kufeza izinjongo ezihlukile ezidinga ukuqaliswa okufanele kwe-PCB. Ukubuyiselwa kwesignali yevidiyo kuxhuma ngqo endizeni ephansi ye-analog ngokusebenzisa ama-vias akhethekile abekwe eduze komkhondo ngamunye we-RGB. Ukuvumelanisa imizila yaphansi kusistimu yaphansi yedijithali, kuyilapho umhlabathi we-chassis osuka kugobolondo lesixhumi uxhuma endaweni eyodwa ukuvimbela ukwakheka kweluphu yaphansi. Lokhu kwahlukaniswa kugcina ubuqotho besignali kukho konke ukusetshenziswa okuxubile kwe-analog-digital.

Izidingo Zokuhlelwa Kwe-DDC Interface

Imigqa ye-I²C engaphakathi kwephinikhodi yesixhumi se-VGA idinga umzila ngokucophelela ukuze kugcinwe ikhwalithi yesignali. Misa iziphikisa zokudonsela phezulu ngaphakathi kwamayintshi angu-0.5 wedivayisi yomthombo ukuze unciphise imiphumela ye-stub. Amandla okulandela umkhondo kufanele ahlale ngaphansi kwesamba esingu-400 pF ukuze kulondolozwe izikhathi zokukhuphuka ezifanele ngokucaciswa kwe-I²C ngakunye. Amandla okuqaqa wasendaweni kuphini lamandla we-5V DDC kufanele asebenzise ama-capacitor e-ceramic angu-0.1 µF abekwe phakathi kuka-5mm wephinikhodi 9 ukuze ahlunge ama-currents adlulayo phakathi nokuxhumana.

Okuhlukile Kwesixhumi se-VGA kanye Nokuguqulwa Kwesiginali

I-Miniaturized VGA Formats

Ukuqaliswa kwe-Mini-VGA kanye ne-Micro-VGA kugcina ukusebenza kwe-pinout okufanayo ngenkathi kunciphisa isigxivizo sezinyawo zesixhumi sezinhlelo zokusebenza eziphathwayo. Lokhu okuhlukile kusebenzisa iphimbo elicolekileyo elikhulisa ukuthambekela kwe-crosstalk, okudinga ukuvikela okunamandla. Ukuhlanganisa ikhebula kuguqulela phakathi kokuphina okujwayelekile kwesixhumi se-VGA namafomethi enziwe nge-miniaturized, okunye ukusetshenziswa okudela ukusebenza kwe-DDC ukuze kuncishiswe ukubalwa kwamaphini kumadizayini abambezeleke isikhala.

Izidingo zokuguqulwa ezisebenzayo

Ukuguqulwa kwe -VGA kuya ku -HDMI kudinga amasekethe kagesi asebenzayo aguqula izimpawu ze-analog RGB zibe yidijithali futhi azifake kuma-stream edijithali ahambisana ne-HDMI. Inqubo yokuguqulwa ihilela ukuguqulwa kwe-analog kuya ku-digital ekujuleni okwanele kwe-bit, ngokuvamile ama-bits angu-8 ngesiteshi sombala, kulandelwe ukufakwa kwekhodi kwe-TMDS kanye nokukhiqizwa kwesignali ehlukile. Ukuguqulwa kwe-VGA kuya ku-DVI-A kuba lula njengoba i-DVI-A isekela ukudluliselwa kwevidiyo ye-analog, okuvumela ama-adapter angasebenzi ukuthi aphinde afake i-pinout ye-VGA kuma-pin esixhumi se-DVI ngaphandle kokuguqulwa kwesignali.

Ukuhlola nokuxazulula Inkinga ye-VGA Connector Pinout

Izinkinga Ezivamile Zesiginali Yobuqotho

Izinkinga zokubonisa ngokuvamile zihlotshaniswa nokwehluleka okuthile ekusetshenzisweni kokuphinana kwesixhumi se-VGA:

• Ukukhipha isiteshi sombala - Ukungabikho okubomvu, okuluhlaza okotshani, noma okuluhlaza okwesibhakabhaka kukhombisa amajoyinti angasebenzi kahle noma imikhondo ephukile kumaphini 1, 2, noma 3
• Akukho okukhiphayo kwesibonisi - Amasiginali angekho we-HSync noma we-VSync kumaphini 13-14 avimbela ukuvumelanisa kokuqapha
• Umsindo wesithombe nesipoki - Isisekelo esinganele noma ukuxhumana okulahlekile komhlabathi kuzikhonkwane 5-8 kuvumela ukuphazamiseka kwe-electromagnetic
• Ukuhluleka kokutholwa kokulungiswa - Izinkinga zokuxhumana ze-DDC kumaphini angu-12 no-15 ziphoqelela ukubonisa kumodi ye-VGA ehlulekayo
• Ukuxhumana okungapheli - Ukucindezelwa komshini ekukhwezeni kwesixhumi kubangela ukuphazamiseka kwesignali kuwo wonke amaphinikhodi

Ukuqinisekiswa Kwekhwalithi Yokukhiqiza

Izinqubo zokuhlola zokukhiqiza zemihlangano yesixhumi se-VGA kufanele ziqinisekise ubude besignali ye-analogi buhlangabezana nokucaciswa okungu-0.7V ±5% kuzo zonke iziteshi ze-RGB. Ukuhlolwa okuqhubekayo kuqinisekisa ukuxhumana okufanele kwembuyiselo yaphansi futhi kuqinisekisa ukuxhumana kwe-DDC ngokufunda idatha yokuhlola ye-EDID. Ukuhlola okungaba namandla aphezulu phakathi kwezikhonkwane zesiginali kanye ne-chassis ground kuqinisekisa ukuhlukaniswa kuhlangabezana nezidingo zokuphepha. Ukuhlolwa kokudonsa ngomshini kuqinisekisa ubuqotho obuhlangene be-solder kuzo zombili izikhonkwane zesignali nezici zokukhweza zesakhiwo.

Isiphetho

Ngokusekelwe kokuhlangenwe nakho kwami ​​​​ngemiklamo ye-PCB yesignali exubile , i-VGA pinout ikhombisa ibhalansi ecatshangelwe kahle phakathi kwevidiyo ye-analog kanye nokulawulwa okuncane kwedijithali. Ukuhlukanisa iziteshi ze-RGB, amasignali okuvumelanisa, kanye nokubuyiselwa kwazo kwenza kube lula ubuqotho besignali. Ukusekela kahle nokugcina ukuvimba okuqhubekayo kubalulekile ekugwemeni izinkinga zomsindo noma zokubonisa. Naphezu kokuba yi-interface yesikhathi esidlule, i-VGA isasebenza ezinhlelweni zokusebenza zezimboni nezihlanganisiwe ngenxa yokuzinza kwayo kanye nokuhambisana kwayo, inikeza izifundo ezicacile ekwakhiweni kwe-interface okusebenzayo.