Isixokelelwano esiqhelekileyo sesicelo sokudibanisa i-USB siqulathe umamkeli we-USB, isixhobo se-USB kunye nentambo ye-USB.Kwinkqubo yebhasi ye-USB, izixhobo zangaphandle zidityaniswe njengezixhobo ze-USB, ezigqibezela ikakhulu imisebenzi ethile, njengediski ye-U eqhele ukusetyenziswa, idiski ephathwayo, imouse, ibhodi yezitshixo, isilawuli somdlalo, njl njl. Umamkeli we-USB yinkosi yenkqubo. kwaye inoxanduva lolawulo kunye nokulungiswa kwedatha kwinkqubo yonxibelelwano nge-USB.Ngethuba lokugqithiswa kwe-connector ye-USB, ukuhanjiswa kwedatha ukusuka kwi-host host ye-USB kwisixhobo se-USB kuthiwa unxibelelwano lwe-Down Stream, kunye nokuhanjiswa kwedatha kwisixhobo se-USB ukuya kwi-host host ye-USB kuthiwa unxibelelwano lwe-Up Stream.
Ngokufana noyilo lwesakhiwo se-Ethernet, inkqubo yebhasi ye-USB isidibanisi nayo inesakhiwo esicacileyo.Oko kukuthi, inkqubo yesicelo esipheleleyo se-USB inokwahlulwa ibe umaleko wokusebenza, umaleko wesixhobo kunye ne-interface yebhasi.
1. Umaleko womsebenzi.Umaleko womsebenzi unoxanduva ikakhulu losasazo lwedatha phakathi kwenginginya ye-USB kunye nesixhobo kwinkqubo yesicelo soqhagamshelo lwe-USB, equlunqwe yiyunithi yokusebenza yesixhobo se-USB kunye nenkqubo ye-USB ehambelanayo.Uluhlu olusebenzayo lubonelela ngeentlobo ezine zokuhanjiswa kwedatha, kubandakanywa ukuTshintshela koLawulo, ukuTshintshela koBuninzi, ukuThuthwa kweNqanaba kunye ne-Isochronous Transfer.
2. Umaleko wezixhobo.Kwisixokelelwano soqhagamshelwano lwe-USB, umaleko wesixhobo unoxanduva lokulawula izixhobo ze-USB, ukwabela iidilesi zezixhobo ze-USB, kunye nokufumana iinkcazo zesixhobo.Umsebenzi woluhlu lwesixhobo ufuna inkxaso kubaqhubi, izixhobo ze-USB, kunye neenginginya ze-USB.Kumaleko wesixhobo, umqhubi we-USB unokufumana amandla esixhobo se-USB.
3. Umaleko wojongano lwebhasi.Umaleko wojongano lwebhasi uyaliqonda ixesha lokudluliselwa kwedatha ye-USB kwinkqubo yokudibanisa i-USB.Ukuhanjiswa kwedatha yebhasi ye-USB kusebenzisa ikhowudi ye-NRZI, ebuyela umva ukungabuyi kwikhowudi ye-zero.Kumaleko ojongano lwebhasi ye-USB, isilawuli se-USB siqhuba ngokuzenzekelayo i-NRZI encoding okanye i-decoding ukugqiba inkqubo yokuhanjiswa kwedatha.Umaleko wojongano lwebhasi udla ngokugqityezelwa ngokuzenzekelayo ngehardware yojongano lwe-USB.
Ixesha lokuposa: May-31-2021