USB 3.2 Basics (Sashe na 1)

USB 3.2 Basics (Sashe na 1)

Dangane da sabuwar yarjejeniyar suna na USB daga USB-IF, asalin USB 3.0 da USB 3.1 ba za a ƙara amfani da su ba. Duk ma'auni na USB 3.0 za a kira su USB 3.2. Ma'auni na USB 3.2 ya ƙunshi duk tsoffin mu'amalar kebul na 3.0/3.1. USB 3.1 interface yanzu ana kiransa USB 3.2 Gen 2, yayin da asalin USB 3.0 ke dubawa shine ake kira USB 3.2 Gen 1. Idan aka yi la'akari da dacewa, saurin canja wurin USB 3.2 Gen 1 shine 5Gbps, USB 3.2 Gen 2 shine 10Gbps, kuma USB 3.2 Gen 2 × 2 shine 20Gbps. Don haka, ana iya fahimtar sabon ma'anar USB 3.1 Gen 1 da USB 3.0 a matsayin abu ɗaya, kawai tare da sunaye daban-daban. Gen 1 da Gen 2 suna magana ne akan hanyoyin ɓoye daban-daban da ƙimar amfani da bandwidth, yayin da Gen 1 da Gen 1 × 2 sun bambanta sosai dangane da tashoshi. A halin yanzu, yawancin manyan uwayen uwayen uwa suna da kebul 3.2 Gen 2 × 2 musaya, wasu daga cikinsu akwai nau'in-C, wasu kuma na USB. A halin yanzu, nau'ikan musaya na Type-C sun fi gama gari.Bambancin tsakanin Gen1, Gen2 da Gen3

1. bandwidth watsawa: Matsakaicin bandwidth na USB 3.2 shine 20 Gbps, yayin da na USB 4 shine 40 Gbps.

2. Ka'idar watsawa: USB 3.2 galibi tana watsa bayanai ta hanyar ka'idar USB, ko saita USB da DP ta hanyar DP Alt Mode (madadin yanayin). Yayin da USB 4 ke ɗaukar ka'idodin USB 3.2, DP da PCIe a cikin fakitin bayanai ta amfani da fasahar rami kuma yana aika su lokaci guda.
3. DP watsawa: Dukansu suna iya tallafawa DP 1.4. USB 3.2 yana daidaita fitarwa ta hanyar DP Alt Mode (madadin yanayin); yayin da USB 4 ba wai kawai zai iya saita fitarwa ta hanyar DP Alt Mode (madadin yanayin ba), amma kuma yana iya cire bayanan DP ta hanyar cire fakitin bayanai na yarjejeniyar rami na USB4.
4. PCIe watsa: USB 3.2 baya goyan bayan PCIe, yayin da USB 4 ya aikata. Ana fitar da bayanan PCIe ta hanyar fakitin bayanan yarjejeniyar rami na USB4.
5. TBT3 watsa: USB 3.2 baya goyan bayan, amma USB 4 ya aikata. Ta hanyar fakitin bayanan yarjejeniyar rami na USB4 ne ake fitar da bayanan PCIe da DP.
6. Mai watsa shiri: Sadarwa tsakanin runduna. USB 3.2 baya goyan bayan, amma USB 4 yayi. Babban dalilin wannan shine USB 4 yana goyan bayan ka'idar PCIe don tallafawa wannan aikin.

Lura: Ana iya ɗaukar fasahar tunneling a matsayin dabarar haɗa bayanai daga ƙa'idodi daban-daban tare, tare da nau'in da aka bambanta ta hanyar fakitin bayanai.
A cikin USB 3.2, watsawar bidiyo na DisplayPort da bayanan USB 3.2 yana faruwa ta hanyar adaftar tashar tashoshi daban-daban, yayin da a cikin USB 4, ana iya watsa bidiyo na DisplayPort, bayanan USB 3.2, da bayanan PCIe ta hanyar wannan tashar. Wannan shi ne babban bambanci tsakanin su biyun. Kuna iya komawa zuwa zane mai zuwa don samun zurfin fahimta.

Ana iya tunanin tashar USB4 a matsayin hanya mai ba da damar nau'ikan motoci iri-iri su wuce. Bayanan USB, bayanan DP, da bayanan PCIe ana iya ɗaukar su azaman motoci daban-daban. A cikin layi daya kuma an jera motoci daban-daban ana tafiya cikin tsari. Tashar USB4 iri ɗaya tana watsa nau'ikan bayanai iri ɗaya ta hanya ɗaya. Bayanan USB3.2, DP, da PCIe sun fara haɗuwa tare kuma ana aika su ta tashar guda ɗaya zuwa ɗayan na'ura, sannan kuma an ware nau'ikan bayanai daban-daban guda uku.