Yog vim li cas qhov yuav tsum tau rau USB-maub

Universal USB tsheb npav interface yog ib tug nrov tus kheej lub computer. Lawv cia rau daisy-chaining ntau pab kiag li lawm mus txog 127 units. Universal USB-bus kev pab txhawb nqa kev ua mus cuag / disconnect li tsis muaj tig tawm lub hwj chim ntawm tus kheej lub computer. Nyob rau hauv cov ntaub ntawv no, lub kev cob cog rua pab kiag li lawm yuav tsum powered ncaj qha los ntawm lub USB interface, uas eliminates qhov xav tau rau siv ntxiv khoom siv fais fab. Nyob rau hauv no tsab xov xwm uas peb yuav tham txog ib tug ntaus ntawv xws li USB-xws. Peb xav txog nws cov hom phiaj, specifications thiab hom.

Yog vim li cas qhov yuav tsum tau rau USB-xws li?

Qhov no arrangement muab kev sib txuas lus ntawm tag nrho cov kev cob cog rua peripheral pab kiag li lawm mus rau lub tsheb npav. USB-xws li - yog ib tug ntse ntaus ntawv uas yog tau mus koom bypassing lub CPU nrog lub RAM nyob rau hauv lub tus kheej lub computer los ntawm lub cim xeeb nkag tau hom. Los ntawm hom ntawm kev koom ua ke ntawm xws li yuav tsum deployed raws li ib feem ntawm lub cev logic los yog raws li cais circuits (chips) raws li cov feem ntau computer motherboard, thiab cov ntxhais Board (expansion card). Raws li cov PCI kev twb kev txuas txoj kev USB-xws li yuav configured rau PCI tsheb npav thiab PCI Express.

Specifications thiab hom ntawm pab kiag li lawm

Ob hom ntawm cov pab kiag li lawm yog tsim los rau cov USB1.1 specification. Yog li ntawd rau USB1.0 Intel lub tuam txhab tsim USB-xws li xws li UHCI thiab OHCI. Qhov txawv ntawm cov pab kiag li lawm tsuas yog nyob rau hauv tus qauv ntawm kev nkag tau mus rau lub sau. Nyob rau hauv rooj plaub thawj lub sau yog structurally teem nyob rau hauv qhov chaw system ports, lub luag hauj lwm rau cov tswv yim thiab tso zis ntawm cov ntaub ntawv, thiab lub thib ob - yog nyob rau hauv seem ntawm tus kheej kev computer nco. USB-OHCI xws hom yog xav tau ntse tshaj tshaj lub hom UHCI. Qhov no kom zoo dua cov lus dag nyob rau hauv nws muaj peev xwm mus tso cov ntsiab processor los ntawm muaj ua niaj hnub ua paub tab txuam nrog cov ntaub ntawv hloov lwm lub tsev rau USB tsheb npav. Ob controllers yog siv 32-ntsis hais.

Rau USB2.0 xws tsim USB Universal Serial Bus hom EHCI. Nws yog tau los pab txhawb cov kev ua hauj lwm thaum muaj kev kub ceev (480 Mbit / s). Qhov no xws li los ntawm cais muas txhawb tsawg-ceev USB1.1 interface los pab txhawb lub qeeb qeeb li.

Rau USB3.0 tsim ceev USB-hom party xws XHCI, uas yog tau los pab txhawb cov kev pauv ntawm cov ntaub ntawv ntawm tag nrho peb speeds.

xaus

Yuav kom saib lub ntsab lug, wb hais tias yog hais tias koj lub computer tsis muaj USB-ports, ua tsaug rau me kev hloov kho nws yog ua tau rau nruab rau hauv lub USB-xws. Xws li yog nqa tawm nyob rau hauv daim ntawv ntawm ib tug expansion card PCI-hom los yog PC-phaib rau laptops. Tej thaj chaw deb controllers no muaj nyob nrog USB1.0 kev pab txhawb nqa 2.0 thiab 3.0. Yog hais tias koj tau txiav txim siab teem lawv tus kheej xws li ib tug ntaus ntawv, nws yog zoo dua mus xaiv ib tug ntau hais, raws li lawv cov nqi yog yuav luag tib yam. Raws li txoj ntsiab cai no muaj peev xwm yuav hloov los ntawm ib tug uas twb muaj lawm xws li sai. Txawm li cas los, xws Modernization yuav tsum tsis txhob hnov qab tias koj yuav tsum tau reinstall tus tsav tsheb rau lub maub los mus ua kom tiav lub lag luam.