He aha te hiahia mō te USB-Controller

Universal atanga pahi USB ko te rorohiko whaiaro rongonui. tukua ratou hoki ngā pūrere maha daisy-herea ana ki runga ki te 127 wae. Universal USB-pahi tautoko mahi ki te hono ngā pūrere / momotu i waho tahuri atu te mana o te rorohiko whaiaro. I roto i tenei take, ka taea te powered nga whakaaro hono tika i roto i te atanga USB, e faaore te hiahia ki te whakamahi i atu kai mana. I roto i tēnei tuhinga ka kōrero tatou e pā ana ki te pūrere pērā i USB-pūmana. whakaaro tatou ona whakaaro, whakaritenga me ngā momo.

He aha te hiahia mō te USB-pūmana?

whakarato ana tēnei whakaritenga kōrero o hono ngā pūrere piringa katoa ki te pahi. USB-pūmana - ko te whakaaro mohio i te mea e taea ki te taunekeneke bypassing te PTM ki te RAM i roto i te rorohiko whaiaro i roto i te aratau uru pūmahara. Na roto i te momo o te tuitui o taua whakaaro e taea te tohatoha hei wāhanga o te arorau pūnaha rite iahiko motuhake (maramara) rite te kaupapa rorohiko nuinga, me te Poari te tamahine (kāri roha) ranei. E ai ki te PCI tikanga hononga USB-pūmana taea te whirihora mō ngā pahi PCI me PCI Express.

Whakatakotoranga me ngā momo o ngā pūrere

E hangaia E rua ngā momo o enei whakaaro mo te whakatakotoranga USB1.1. Na hoki USB1.0 Intel kamupene whakawhanakehia USB-pūmana pērā i UHCI me OHCI. Ko te rerekētanga i waenganui i enei whakaaro he anake i roto i te tikanga o te whai wāhi ki te rēhita. I roto i te take tuatahi te hanganga e whakaritea te rēhita i roto i te tauranga pūnaha wāhi, te kawenga mō te tāuru me te putanga o te kōrero, me te tuarua - he i roto i te wāhanga o te mahara rorohiko whaiaro. whakaaro USB-OHCI momo pūmana te ki kia nui atu maramarama atu i te momo UHCI. takoto tenei painga i roto i tona kaha ki te wewete i te pūtukatuka matua i he ki te mahi i ngā mahi mahi e pā ana ki te whakawhiti raraunga i runga i ngā pahi USB. E whakamahia pūmana rua bit-32 whakatutuki.

Hoki USB2.0 pūmana USB hangaia Universal Serial Bus Momo EHCI. He mea e taea ki te tautoko i te mahi i te tere tiketike (480 Mbit / s). Tenei pūmana i roto i ngā whakawhitinga motuhake tautoko atanga USB1.1 iti-tere ki te tautoko i te whakaaro pōturi.

Hoki tere USB-momo ope pūmana USB3.0 hoahoa XHCI, i te mea e taea ki te tautoko i te utu o te mōhiohio ka kīia e toru katoa.

mutunga

Hei whakarāpopoto, kia mea a e ki te kore e tō rorohiko i o USB-tauranga, te whakawhetai ki akatuke'anga iti ko reira taea ki te tāuta i te USB-kaiwhakahaere. E kawea taua whakaaro i roto i roto i te puka o te PCI-momo kāri roha PC-kāri ranei mo rorohiko. E wātea ana ki te USB1.0 tautoko 2.0 me 3.0 pūmana Mamao. Ki te mea kua whakaritea e koe ki te whakaturia te pūrere taua ratou, he pai reira ki te whiriwhiri i te ohorere ake, kia rite ki to ratou utu ko tata te taua. E ai ki tenei parau tumu e taea te whakakapi i te pūmana tīariari tere. Heoi, e kore te tikanga taua ao hōu wareware e ka hiahia koe ki te tāuta anō i te taraiwa mo te kaiwhakahaere ki te whakaoti i te mahi.