iindaba

i-USBkukubekwa emgangathweni kunye nokwenza lula kwesokethi yoqhagamshelo lwezixhobo zekhompyuter ye-elektroniki, kwaye inkcazo yayo kunye neemodeli zenziwe yi-Intel, NEC, Compaq, DEC, IBM (), Microsoft (Microsoft) kunye neNorterntelecom.
Enye inzuzo ebalulekileyo ye-USB kukuba ifanelekile ukutshintshwa okushushu, oko kukuthi, ngexesha lokusebenza, inokudibanisa ngokukhuselekileyo okanye ikhuphe izixhobo ze-USB ukugqiba uxhulumaniso lwe-1394 lokwenyani.
Kweli nqanaba, nangona izixhobo ze-USB zisetyenziswe ngokubanzi, iziseko ze-USB2.0 zixhaphake kakhulu, kwaye izinga layo lokudlulisa liyi-480mbps ngesekhondi.Kumalunga namaxesha angama-40 oko kuchazwa kwe-USB1.1.Inzuzo enkulu kubathengi bokunyusa isantya kukuba abathengi banokusebenzisa izixhobo ze-peripheral ezisebenzayo, kunye nezixhobo ze-peripheral zezantya ezahlukeneyo zinokudityaniswa kwindlela ye-USB2.0 ngaphandle kokukhathazeka malunga nomphumo webhotile wokuhanjiswa kwedatha.
I-Universal Serial Bus (isiNgesi: I-Universal Serial Bus, ekubhekiselwa kuyo njenge: USB) yinkcazo yebhasi ye-serial edibanisa isofthiwe yekhompyutha kunye nezixhobo ze-peripheral, kwaye ikwangumgangatho wobugcisa we-I / O izibuko;uphando kufuneka longezwe, kwaye iimveliso kufuneka ziqinisekiswe ngophando, kodwa akukho copyright ifunekayo.Ngokwezinga lokudluliselwa, lihlulwe kwi-USB: 2.0, i-USB: 3.0, i-USB: 3.1 kunye ne-USB4;I-USB3.1 kunye ne-USB4 (i-alias typec) inokudlulisa idatha, idlulise isandi, umfanekiso kunye nokutshaja kwebhetri.Amandla aphezulu yi-20V5A (100W), kunye ne-IC (E-MARK) iyadingeka.
Ngokwendima, le miqondiso ingentla inokwahlulwa ngokweendidi ezintlanu:
Udidi lokuqala: Iimpawu ezinxulumene namandla, kuquka.
A) I-VBUS, i-buspower yentambo ye-USB (ngokuqhelekileyo ihambelana ne-VBUS kwingqiqo yakho yokwenyani).
b) I-VCONN (umqondiso uvela kuphela kwiplagi) isetyenziselwa ukusasaza amandla kwiplagi (kunokucingelwa ukuba ezinye iiplagi zinokuba nesekethe yombane).
C) GND, isixhobo sokumisa.
Uhlobo lwe-II: I-USB2.0 intambo yokutshaja ifowuni ephathwayo, i-D+/D-, iperi enye kuphela kwi-plug ekupheleni, ehambelana neenkcukacha ze-USB2.0 endala.Nangona kunjalo, ukwenzela ukuba usebenzise kakuhle ngaphambili nangemuva, unokufakwa ngokungqongqo.Isiphelo sesokhethi sichaza amaqela ama-2, ukwenzela ukuba isiphelo sesokhethi senze i-ping efanelekileyo ngokwemeko ethile.Uhlobo lwe-3: I-USB3.1 intambo yokutshaja ifowuni, i-TX+/ kunye ne-RX+/, ukudluliselwa kwedatha ngokukhawuleza.Kukho iiseti ezi-2 zeplagi kunye neziphelo zesokethi, ezifanelekileyo kulo naluphi na ukufakwa ngaphambili nangasemva.
Udidi lwesine: umqondiso osetyenziselwa uLungiselelo, iplagi ineCC enye kuphela, kwaye isiseko sineeCC1 ezimbini kunye neCC2.
Udidi lwesihlanu: Iimpawu ezifunekayo kwisiphumo sokwandisa, imeko yesicelo yangempela igqitywe ngomphumo ohambelanayo wokwandisa.
Kwiintlobo ezahlukeneyo zeesokethi kunye neeplagi ezichazwe kwi-3.1, kunokwenzeka kakhulu ukuba ezi zikhonkwane ze-24 kunye nezibonakaliso aziyi kusetyenziswa kuzo zonke izicelo.Nceda ujonge umgangatho we-USB Type-C.Ukongeza, unokuqaphela ukuba kwi-USBType-C 24 iimpawu zephini, Amandla (GND / VBUS) kunye nolwazi lwedatha (D +/D-/TX/RX) zihambelana ngokupheleleyo (kuMmandla, kunjalo Faka, zonke ziyafana. Abanye, kuquka i-CC, i-SBU kunye ne-VONN, isetyenziselwa ukuhlolwa kokuthwala, uhlobo lomgca, njl.