Kungani isidingo-USB Isilawuli

Universal-USB ibhasi esibonakalayo Uyi ikhompyutha siqu athandwayo. Bavumela amadivayisi Daisy-chaining amaningi kuze kube amayunithi 127. Universal-USB ibhasi ukweseka umsebenzi ukuxhuma amadivayisi / unqamule ngaphandle kokuvala amandla ye-computer siqu. Kulokhu, amadivaysi axhunyiwe kungenziwa inikwa amandla yi ngqo ngokusebenzisa esibonakalayo-USB, okwenza kungabi nesidingo ukusebenzisa ezengeziwe segezi. Kulesi sihloko sizoxoxa idivayisi ezifana USB-isilawuli. Sibheka injongo yako, Ukucaciswa nezinhlobo.

Kungani isidingo-USB isilawuli?

Leli lungiselelo inikeza zokuxhumana lawo wonke amadivayisi neuropathy exhunywe kwi-ibhasi. USB-isilawuli - kuyinto idivayisi ohlakaniphile elikwaziyo uxhumana ngokudlula CPU ne-RAM computer siqu ngokusebenzisa imodi inkumbulo ukufinyelela. Ngu uhlobo ukuhlanganiswa amadivayisi ezinjalo kungenziwa efakwe njengengxenye logic uhlelo noma njengoba izifunda ehlukile (chips) njengoba iningi computer umbadlana, kanye Ndodakazi Board (ukunwetshwa ikhadi). Ngokwe-PCI uxhumano indlela ye-USB isilawuli kungenziwa amisiwe for PCI amabhasi kanye PCI Express.

Imininingwane izinhlobo amadivayisi

Izinhlobo ezimbili lezi amadivaysi zidizayinelwe USB1.1 esifakiwe. Ngakho-ke USB1.0 Intel inkampani athuthukile-USB isilawuli ezifana UHCI futhi OHCI. Umehluko phakathi kwalezi divayisi kuphela indlela ukufinyelela amarejista. Esimweni sokuqala ezincwadini kuthiwa ikhipha ahlelwe amatheku uhlelo isikhala, obhekene input bese okukhipha ulwazi, kanti eyesibili - kukhona esigabeni inkumbulo computer siqu. USB-OHCI isilawuli uhlobo ubhekwa ehlakaniphile kakhulu kunohlobo UHCI. Lokhu inzuzo itholakala ikhono layo ukukhulula wokugaya main ekutheni ukwenza imisebenzi isimiso elihlobene ne Ukudlulisa idatha ye-USB amabhasi. Bobabili abalawuli asetshenziswa-32-bit ekhuluma.

Ukuze USB2.0 isilawuli yakhelwe USB Universal yomkhiqizo Bus Uhlobo EHCI. It uyakwazi ukusekela umsebenzi ngesivinini (480 Mbit / s). Lokhu isilawuli ngokusebenzisa ukuthengiselana ahlukene isekela ongaphakeme-speed USB1.1 esibonakalayo ukusekela amadivaysi kancane.

Ukuze USB3.0 yakhelwe isivinini-USB uhlobo aphethe isilawuli XHCI, elikwaziyo ukusekela exchange kolwazi ngaso sonke ngesivinini ezintathu.

isiphetho

Kufinyeta, ake sithi uma ikhompyutha yakho ayinayo kwesitoreji-izimbobo, sibonga kutlhogeka bona kulungiswe kungenzeka ukufaka-USB isilawuli. Amadivayisi anjalo abazenzi ngesimo ukunwetshwa ikhadi PCI-hlobo noma i-PC-namakhadi laptops. abalawuli Remote ayatholakala nge USB1.0 ukwesekwa 2.0 no-3.0. Uma unqume ukuba azilungiselele leli thuluzi, kungcono ukuba ukhethe okusheshayo ngaphezulu, njengoba izindleko zabo cishe okufanayo. Ngokwalesi simiso singasetshenziswa esikhundleni i isilawuli ekhona ngokushesha. Nokho, sesimanje ezinjalo kumelwe singakhohlwa ukuthi uzodinga kabusha abashayeli isilawuli ukuqedela ukusebenza.