USB 3.2 Basics (Icandelo 1)

USB 3.2 Basics (Icandelo 1)

Ngokwe-USB yamva nje yengqungquthela evela kwi-USB-IF, i-USB 3.0 yoqobo kunye ne-USB 3.1 ayisayi kusetyenziswa. Yonke imigangatho ye-USB 3.0 iya kubhekiswa kuyo njenge-USB 3.2. Umgangatho we-USB 3.2 udibanisa yonke i-interface ye-USB 3.0/3.1 endala. I-interface ye-USB 3.1 ngoku ibizwa ngokuba yi-USB 3.2 Gen 2, ngelixa i-interface ye-USB 3.0 yasekuqaleni ibizwa ngokuba yi-USB 3.2 Gen 1. Ukuqwalasela ukuhambelana, isantya sokudlulisa i-USB 3.2 Gen 1 yi-5Gbps, i-USB 3.2 Gen 2 yi-10Gbps, kunye ne-USB 3.2 Gen 2×2 yi-20Gbps. Ngoko ke, inkcazo entsha ye-USB 3.1 Gen 1 kunye ne-USB 3.0 inokuqondwa njengento enye, nje ngamagama ahlukeneyo. I-Gen 1 kunye ne-Gen 2 ibhekisela kwiindlela ezahlukeneyo ze-encoding kunye namazinga okusebenzisa i-bandwidth, ngelixa i-Gen 1 kunye ne-Gen 1 × 2 zihluke ngokufanelekileyo ngokwemijelo. Okwangoku, uninzi lweebhodi zoomama ezikwisiphelo esiphezulu zine-USB 3.2 Gen 2 × 2 ujongano, ezinye zazo zilunxibelelwano lwe-Type-C kwaye ezinye ziyi-USB. Okwangoku, ujongano lwe-Type-C luxhaphake kakhulu.Umahluko phakathi kweGen1, Gen2 kunye neGen3

1. I-bandwidth yokudlulisa: I-bandwidth ephezulu ye-USB 3.2 yi-20 Gbps, ngelixa i-USB 4 yi-40 Gbps.

2. Iprotocol yokudlulisa: I-USB 3.2 idlulisela ngokukodwa idatha nge-protocol ye-USB, okanye iqwalasele i-USB kunye ne-DP nge-DP Alt Mode (enye indlela). Ngelixa i-USB 4 ifaka i-USB 3.2, i-DP kunye ne-PCIe protocol kwiipakethi zedatha usebenzisa itekhnoloji yetonela kwaye uyithumele ngaxeshanye.
3. Ukuhanjiswa kwe-DP: Bobabini banokuxhasa i-DP 1.4. I-USB 3.2 iqwalasela imveliso nge-DP Alt Mode (enye indlela); ngelixa i-USB 4 ayinakho kuphela ukuqwalasela imveliso nge-DP Alt Mode (enye indlela), kodwa inokukhupha idatha ye-DP ngokukhupha iipakethi zedatha ye-USB4 tunnel protocol.
4. Ukuhanjiswa kwe-PCIe: I-USB 3.2 ayixhasi i-PCIe, ngelixa i-USB 4 iyenzayo. Idatha yePCIe itsalwa ngepakethi yedatha yeprotocol ye-USB4.
5. Ukuhanjiswa kwe-TBT3: I-USB 3.2 ayixhasi, kodwa i-USB 4 iyakwenza. Kungenxa yeepakethi zedatha ye-USB4 yetonela yedatha apho i-PCIe kunye nedatha ye-DP itsalwa.
6. Umamkeli-ndwendwe: Unxibelelwano phakathi kwababuki zindwendwe. I-USB 3.2 ayixhasi, kodwa i-USB 4 iyakwenza. Esona sizathu siphambili soku kukuba i-USB 4 ixhasa iprotocol yePCIe ukuxhasa lo msebenzi.

Qaphela: Itekhnoloji yetonela inokuthathwa njengobuchule bokudibanisa idatha esuka kwiiprothokholi ezahlukeneyo kunye, kunye nodidi olwahlulwe ngesihloko sepakethe yedatha.
Kwi-USB 3.2, ukuhanjiswa kwevidiyo ye-DisplayPort kunye nedatha ye-USB 3.2 kwenzeka ngee-adapters zeshaneli ezahlukeneyo, ngelixa kwi-USB 4, ividiyo ye-DisplayPort, idatha ye-USB 3.2, kunye nedatha ye-PCIe inokudluliselwa ngesiteshi esifanayo. Lo ngowona mahluko mkhulu phakathi kwezi zimbini. Ungabhekisa kulo mzobo ulandelayo ukuze ufumane ukuqonda okunzulu.

Ijelo le-USB4 linokucingelwa njengendlela evumela iintlobo ezahlukeneyo zezithuthi ukuba zidlule. Idatha ye-USB, idatha ye-DP, kunye nedatha ye-PCIe inokuthathwa njengezithuthi ezahlukeneyo. Kwindlela enye, izithuthi ezahlukeneyo zidweliswe kwaye zihamba ngocwangco. Ijelo le-USB4 elifanayo lihambisa iindidi ezahlukeneyo zedatha ngendlela efanayo. I-USB3.2, i-DP, kunye nedatha ye-PCIe kuqala idibana kunye kwaye ithunyelwe ngetshaneli enye ukuya kwesinye isixhobo, kwaye ke iintlobo ezintathu ezahlukeneyo zedatha ziyahlulwa.