Uhlelo lokusebenza olujwayelekile lwesixhumi se-USB luhlanganisa isikhungo se-USB, idivayisi ye-USB nekhebula le-USB.Kusistimu yebhasi le-USB, amadivayisi angaphandle ngokuvamile ahlanganiswa njengamadivayisi e-USB, aqeda ikakhulukazi imisebenzi ethile, njengediski ye-U evame ukusetshenziswa, i-hard disk yeselula, igundane, ikhibhodi, isilawuli segeyimu, njll. Umsingathi we-USB ungumphathi wesistimu. futhi unesibopho sokulawula nokucubungula idatha ohlelweni lokuxhumana nge-USB.Ngesikhathi sokudlulisa isixhumi se-USB, ukudluliswa kwedatha kusuka kumsingathi we-USB kuya kudivayisi ye-USB kubizwa ngokuthi ukuxhumana kwe-Down Stream, futhi ukudluliswa kwedatha kusuka kudivayisi ye-USB kuya kumsingathi we-USB kubizwa ngokuthi ukuxhumana kwe-Up Stream.
Ngokufana nesakhiwo esinezingqimba se-Ethernet, isistimu yebhasi yesixhumi se-USB nayo inesakhiwo esinezingqimba esicacile.Okusho ukuthi, uhlelo oluphelele lohlelo lwe-USB lungahlukaniswa lube isendlalelo sokusebenza, isendlalelo sedivayisi kanye nesendlalelo sokubuka ibhasi.
1. Isendlalelo somsebenzi.Isendlalelo sokusebenza sibhekene kakhulu nokudluliswa kwedatha phakathi komsingathi we-USB kanye nedivayisi kusistimu yohlelo lwesixhumi se-USB, esakhiwe iyunithi yokusebenza yedivayisi ye-USB kanye nohlelo oluhambisanayo lokusingatha i-USB.Isendlalelo esisebenzayo sihlinzeka ngezinhlobo ezine zokudluliswa kwedatha, okuhlanganisa i-Control Transfer, Bulk Transfer, Interrupt Transfer kanye ne-Isochronous Transfer.
2. Isendlalelo semishini.Kusistimu yesixhumi se-USB, isendlalelo sedivayisi sinesibopho sokuphatha amadivayisi e-USB, ukunikeza amakheli edivayisi ye-USB, kanye nokuthola izincazelo zedivayisi.Umsebenzi wesendlalelo sedivayisi udinga ukusekelwa kwabashayeli, amadivayisi we-USB, nezisingathi ze-USB.Kusendlalelo sedivayisi, umshayeli we-USB angathola amakhono edivayisi ye-USB.
3. Isendlalelo esibonakalayo sebhasi.Isendlalelo esibonakalayo sebhasi sibona isikhathi sokudluliswa kwedatha ye-USB kusistimu yesixhumi se-USB.Ukudluliswa kwedatha yebhasi le-USB kusebenzisa ikhodi ye-NRZI, ehlehlayo engabuyi ekubhaleni uziro.Kusendlalelo sokubonwa kwebhasi lesixhumi se-USB, isilawuli se-USB senza ngokuzenzakalelayo ukubhala ngekhodi kwe-NRZI noma ukuqopha ukuze kuqedelwe inqubo yokudlulisa idatha.Isendlalelo esibonakalayo sebhasi sivamise ukuqedelwa ngokuzenzakalela yi-USB interface hardware.
Isikhathi sokuthumela: May-31-2021