Kutheni imfuneko USB-Controller

Universal interface USB ibhasi ithandwa ikhompyutha siqu. Yenza izixhobo ezininzi mbali-chaining ukuya neeyunithi 127. Universal umsebenzi inkxaso USB-ibhasi ukuqhagamshela izixhobo / Nqamla uxhulumaniso ngaphandle kokucima amandla computer siqu. Kulo mzekelo, izixhobo ezidityanisiweyo nga sinokubanamandla ngqo nojongano USB, leyo ishenxisa imfuneko yokusebenzisa izinto ezongezelelweyo amandla. Kweli nqaku siza kuthetha isixhobo ezifana USB-isilawuli. Siqwalasela injongo yaso, iinkcukacha kunye neendidi.

Kutheni imfuneko USB-isilawuli?

Eli lungiselelo inika unxibelelwano zonke izixhobo yoluvo eqhagamshelwe ibhasi. USB-isilawuli - yinto isixhobo okrelekrele onako basebenzisane ngokudlula CPU kunye RAM kwi computer yakho ngokusebenzisa imo ufikelelo memory. Xa uhlobo yokuxubana izixhobo ezifana efakwe njengenxalenye yenkqubo-logic okanye kwiziphaluka ezahlukeneyo (iitshiphusi) njengoko uninzi computer motherboard, kunye neBhodi, ntombi (ukwanda card) kungenziwa. Ngokutsho PCI indlela lwe USB-isilawuli kufuneka iqwalaselwe iibhasi PCI kunye PCI Express.

Ukucacisa neendidi kwezixhobo

iintlobo ezimbini kwezi zixhobo zenzelwe ukuba USB1.1 incazelo. Ngoko ke ukuba inkampani Intel USB1.0 livelise USB-isilawuli ezifana UHCI kunye OHCI. Umahluko phakathi kwezi zixhobo kukho kuphela indlela yokufikelela kuloo rejista. Kwimeko yokuqala rejista ngokokwakheka ezicwangciswe kwinkqubo kwisithuba kumazibuko, onoxanduva igalelo kunye neziphumo lolwazi, kwaye eyesibini - sele candelo computer memory lobuqu. USB-OHCI uhlobo isilawuli ithathwa ngokuba ezikrelekrele ngaphezu uhlobo UHCI. Le inzuzo kwezopolitiko ngamandla ayo ukuba akhulule iprosesa ephambili kokuba ukwenza imisebenzi yesiqhelo ezinxulumene ukudluliselwa kwedata kwiibhasi USB. Omabini nabaqondisi zisetyenziswa dilesi 32-bit.

Kuba USB2.0 isilawuli USB eyenzelwe Universal Uthotho Bus Type EHCI. Iyakwazi ukuxhasa umsebenzi ngesantya esiphezulu (480 Mbit / s). Le umlawuli ngokusebenzisa imicimbi eyahlukileyo lixhasa nesezantsi isantya USB1.1 ujongano ukuxhasa izixhobo kancinci.

Kuba USB3.0 eyenzelwe isantya USB-uhlobo host isilawuli XHCI, onako ukuxhasa ukutshintshisana ngolwazi kuzo zontathu ngezantya.

isiphelo

Ukushwankathela, masithi ukuba khompyutha yakho ayinayo lwe USB-zamazibuko, ngenxa zikho ngayo kunokwenzeka ukufaka i-USB-esisebenza. izixhobo ezinjalo kwenziwa ngohlobo ulwandiso ikhadi PCI-uhlobo okanye PC-amakhadi for laptops. nabaqondisi Olukude ziyafumaneka inkxaso 2.0 no 3.0 USB1.0. Ukuba sele ligqibe kwelokuba libekele ngokwabo isixhobo esinjalo, kungcono ukukhetha elikhawulezayo ngakumbi, njengoko iindleko zabo phantse efanayo. Ngokwalo mgaqo na indawo umlawuli ezikhoyo ngokukhawuleza. Noko ke, loo maxesha kufuneka ungalibali ukuba kuya kufuneka uphinde ufake abaqhubi ukuba umlawuli ukugqibezela umsebenzi.