Mapangidwe a basi a cholumikizira cha USB ndi chosanjikiza

Njira yolumikizira yolumikizira ya USB imakhala ndi cholumikizira cha USB, chipangizo cha USB ndi chingwe cha USB.M'kachitidwe ka mabasi a USB, zida zakunja nthawi zambiri zimagwirizanitsidwa ngati zida za USB, zomwe makamaka zimamaliza ntchito zinazake, monga diski ya U, yomwe imagwiritsidwa ntchito nthawi zambiri, mbewa, kiyibodi, wowongolera masewera, ndi zina zambiri. ndipo ali ndi udindo woyang'anira ndi kukonza deta polumikizana ndi USB.Panthawi yotumizira cholumikizira cha USB, kutumiza kwa data kuchokera ku USB kupita ku chipangizo cha USB kumatchedwa Down Stream communication, ndipo kutumiza kwa data kuchokera ku chipangizo cha USB kupita ku USB host kumatchedwa Up Stream communication.

Mofanana ndi mapangidwe a Ethernet, mabasi a USB cholumikizira alinso ndi mawonekedwe omveka bwino.Ndiko kuti, pulogalamu yathunthu ya USB ikhoza kugawidwa kukhala wosanjikiza, wosanjikiza wa chipangizo ndi mawonekedwe a mabasi.

1. Wosanjikiza ntchito.Ntchito yosanjikiza imayang'anira kufalitsa kwa data pakati pa cholumikizira cha USB ndi chipangizocho mu pulogalamu yolumikizira yolumikizira ya USB, yomwe imapangidwa ndi gawo la chipangizo cha USB ndi pulogalamu yofananira ya USB.Chigawo chogwira ntchito chimapereka mitundu inayi yotumizira deta, kuphatikizapo Control Transfer, Bulk Transfer, Interrupt Transfer ndi Isochronous Transfer.

2. Wosanjikiza zida.Mu USB cholumikizira dongosolo, wosanjikiza chipangizo ndi udindo woyang'anira zipangizo USB, kupatsa maadiresi zipangizo USB, ndi kupeza zofotokozera chipangizo.Ntchito ya chipangizo chosanjikiza imafunikira thandizo la madalaivala, zida za USB, ndi makamu a USB.Pagawo la chipangizocho, woyendetsa USB amatha kukhala ndi luso la chipangizo cha USB.

3. Bus mawonekedwe wosanjikiza.Chigawo cha mawonekedwe a mabasi chimazindikira nthawi ya kutumiza kwa data ya USB munjira yolumikizira USB.Kutumiza kwa data pamabasi a USB kumagwiritsa ntchito khodi ya NRZI, yomwe imasinthiratu osabwerera ku ziro.Mu mawonekedwe a mabasi a USB cholumikizira, chowongolera cha USB chimadzipangira ma encoding kapena decoding ya NRZI kuti amalize ntchito yotumizira deta.Mawonekedwe a mabasi nthawi zambiri amamalizidwa ndi zida za USB.