Iziseko ze-USB 3.2 (Icandelo 1)

Iziseko ze-USB 3.2 (Icandelo 1)

Ngokwendlela yamva nje yokubiza amagama nge-USB evela kwi-USB-IF, i-USB 3.0 yokuqala kunye ne-USB 3.1 azisayi kusetyenziswa. Zonke imigangatho ye-USB 3.0 ziya kubizwa ngokuba yi-USB 3.2. Umgangatho we-USB 3.2 uquka zonke ii-interfaces ze-USB 3.0/3.1 ezindala. I-interface ye-USB 3.1 ngoku ibizwa ngokuba yi-USB 3.2 Gen 2, ngelixa i-interface ye-USB 3.0 yokuqala ibizwa ngokuba yi-USB 3.2 Gen 1. Xa ucinga ngokuhambelana, isantya sokudlulisa se-USB 3.2 Gen 1 yi-5Gbps, i-USB 3.2 Gen 2 yi-10Gbps, kwaye i-USB 3.2 Gen 2 × 2 yi-20Gbps. Ke ngoko, inkcazo entsha ye-USB 3.1 Gen 1 kunye ne-USB 3.0 inokuqondwa njengento efanayo, ngamagama ahlukeneyo. I-Gen 1 kunye ne-Gen 2 zibhekisa kwiindlela ezahlukeneyo zokufaka ikhowudi kunye namazinga okusetyenziswa kwe-bandwidth, ngelixa i-Gen 1 kunye ne-Gen 1 × 2 zahlukile ngokweemvakalelo ngokweetshaneli. Okwangoku, iibhodi ezininzi zeemotherboards eziphezulu zine-USB 3.2 Gen 2×2 interfaces, ezinye zazo ziyi-Type-C interfaces kwaye ezinye ziyi-USB interfaces. Okwangoku, ii-Type-C interfaces zixhaphake kakhulu. Umahluko phakathi kweGen1, Gen2 kunye neGen3

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

2. Iprotokholi yokudlulisa idatha: I-USB 3.2 idlulisela idatha ngeprotokholi ye-USB, okanye imisela i-USB kunye ne-DP nge-DP Alt Mode (imo eyahlukileyo). Ngelixa i-USB 4 ihlanganisa iiprotokholi ze-USB 3.2, ze-DP kunye ne-PCIe kwiipakethi zedatha isebenzisa ubuchwepheshe be-tunnel kwaye izithumela ngaxeshanye.
3. Ukudluliselwa kwe-DP: Zombini zinokuxhasa i-DP 1.4. I-USB 3.2 imisela imveliso nge-DP Alt Mode (imo eyahlukileyo); ngelixa i-USB 4 ingagcini nje ngokumisela imveliso nge-DP Alt Mode (imo eyahlukileyo), kodwa ikwanokutsala idatha ye-DP ngokutsala iipakethi zedatha zeprotocol ye-USB4 tunnel.
4. Ukudluliselwa kwe-PCIe: I-USB 3.2 ayixhasi i-PCIe, ngelixa i-USB 4 ixhasa. Idatha ye-PCIe ikhutshwa ngeepakethi zedatha zeprotocol ye-USB4 tunnel.
5. Uthumelo lwe-TBT3: I-USB 3.2 ayixhasi, kodwa i-USB 4 iyaxhasa. Kungeepakethi zedatha zeprotocol ye-USB4 apho idatha ye-PCIe kunye ne-DP ikhutshwa khona.
6. Umphathi ukuya kuMphathi: Unxibelelwano phakathi kweehost. I-USB 3.2 ayixhasi, kodwa i-USB 4 iyaxhasa. Isizathu esiphambili soku kukuba i-USB 4 ixhasa iprotocol ye-PCIe ukuxhasa lo msebenzi.

Qaphela: Itekhnoloji yokuhambisa idatha kwi-tunneling ingathathwa njengendlela yokudibanisa idatha evela kwiiprotokholi ezahlukeneyo kunye, uhlobo lwayo lwahlulwe ngentloko yepakethi yedatha.
Kwi-USB 3.2, ukudluliselwa kwevidiyo yeDisplayPort kunye nedatha ye-USB 3.2 kwenzeka ngeeadaptha zetshaneli ezahlukeneyo, ngelixa kwi-USB 4, ividiyo yeDisplayPort, idatha ye-USB 3.2, kunye nedatha ye-PCIe zinokudluliselwa ngetshaneli enye. Lo ngumahluko omkhulu phakathi kwezi zimbini. Ungabhekisa kumzobo olandelayo ukuze ufumane ukuqonda okunzulu.

Itshaneli ye-USB4 ingacingelwa njengomzila ovumela iintlobo ezahlukeneyo zezithuthi ukuba zidlule. Idatha ye-USB, idatha ye-DP, kunye nedatha ye-PCIe zinokuthathwa njengezithuthi ezahlukeneyo. Kumzila omnye, izithuthi ezahlukeneyo zibekwe umqolo kwaye zihamba ngendlela ehlelekileyo. Itshaneli efanayo ye-USB4 idlulisela iintlobo ezahlukeneyo zedatha ngendlela efanayo. Idatha ye-USB3.2, DP, kunye ne-PCIe kuqala ziyadibana kwaye zithunyelwa ngetshaneli enye ukuya kwesinye isixhobo, kwaye emva koko iintlobo ezintathu ezahlukeneyo zedatha ziyahlulwa.