Zvinhu zvepakutanga zve USB 3.2 (Chikamu 1)

Zvinhu zvepakutanga zve USB 3.2 (Chikamu 1)

Zvinoenderana nehurongwa hwemazuva ano hwekupa mazita eUSB kubva kuUSB-IF, USB 3.0 yekutanga neUSB 3.1 hazvichashandiswi. Ma standard ese eUSB 3.0 achanzi USB 3.2. USB 3.2 standard inosanganisira ese ma interfaces ekare eUSB 3.0/3.1. USB 3.1 interface yava kunzi USB 3.2 Gen 2, nepo USB 3.0 yekutanga ichinzi USB 3.2 Gen 1. Tichifunga nezvekuenderana, kumhanya kwekutamisa kweUSB 3.2 Gen 1 i5Gbps, USB 3.2 Gen 2 i10Gbps, uye USB 3.2 Gen 2×2 i20Gbps. Saka, tsananguro itsva yeUSB 3.1 Gen 1 neUSB 3.0 inogona kunzwisiswa sechinhu chimwe chete, nemazita akasiyana. Gen 1 neGen 2 zvinoreva nzira dzakasiyana dzekunyora uye mwero wekushandiswa kwebandwidth, nepo Gen 1 neGen 1×2 zvakasiyana zvakanyanya maererano nema channels. Parizvino, mamaboard mazhinji emhando yepamusoro ane ma USB 3.2 Gen 2×2 interfaces, mamwe acho ari ma Type-C interfaces uye mamwe ari ma USB interfaces. Parizvino, ma Type-C interfaces akajairika. Musiyano uripo pakati peGen1, Gen2 neGen3

1. Kukwanisa kutumirwa kwedata: Kukwanisa kutumirwa kwedata re USB 3.2 kwakakwira kupfuura 20 Gbps, ukuwo kunokwanisa kutumirwa ne USB 4 kwakakwira kupfuura 40 Gbps.

2. Transmission protocol: USB 3.2 inonyanya kutumira data kuburikidza neUSB protocol, kana kugadzirisa USB neDP kuburikidza neDP Alt Mode (alternative mode). Kunyange USB 4 ichibatanidza USB 3.2, DP nePCIe protocols mumapaketi edata uchishandisa tekinoroji ye tunnel uye inoatumira panguva imwe chete.
3. Kutapurirana kweDP: Ose anogona kutsigira DP 1.4. USB 3.2 inogadzirisa kubuda kuburikidza neDP Alt Mode (alternative mode); nepo USB 4 isingangogone kugadzirisa kubuda kuburikidza neDP Alt Mode (alternative mode), asiwo inogona kubvisa data reDP nekubvisa data packets yeUSB4 tunnel protocol.
4. Kutapurirana kwePCIe: USB 3.2 haitsigire PCIe, ukuwo USB 4 ichitsigira. Data rePCIe rinotorwa kuburikidza nemapaketi edata eUSB4 tunnel protocol.
5. Kutapurirana kweTBT3: USB 3.2 haitsigire, asi USB 4 inoitsigira. Mapaketi edata ePCIe neDP anotorwa kuburikidza neUSB4 tunnel protocol.
6. Host to Host: Kutaurirana pakati pehost. USB 3.2 haitsigire, asi USB 4 inotsigira. Chikonzero chikuru cheizvi ndechekuti USB 4 inotsigira protocol yePCIe kutsigira basa iri.

Cherechedza: Tekinoroji yekubatanidza data kubva kumaprotocol akasiyana inogona kutariswa senzira yekubatanidza data kubva kumaprotocol akasiyana pamwe chete, mhando yacho ichisiyaniswa kuburikidza nemusoro wepaketi redata.
Mu USB 3.2, kutapurirana kwedata reDisplayPort video neUSB 3.2 kunoitika kuburikidza nemachannel adapter akasiyana, nepo mu USB 4, DisplayPort video, USB 3.2 data, nePCIe data zvinogona kutapurirwa kuburikidza nechannel imwe chete. Uyu ndiwo musiyano mukuru pakati pezviviri izvi. Unogona kutarisa dhayagiramu inotevera kuti uwane kunzwisisa kwakadzama.

Nzira yeUSB4 inogona kufungidzirwa senzira inobvumira mhando dzakasiyana dzemotokari kuti dzipfuure. Data reUSB, data reDP, uye data rePCIe zvinogona kutorwa semotokari dzakasiyana. Munzira imwe chete, mota dzakasiyana dzakarongwa uye dzinofamba zvakarongeka. Nzira imwe chete yeUSB4 inotumira mhando dzakasiyana dzedata nenzira imwechete. Data reUSB3.2, DP, uye PCIe rinotanga kusangana pamwe chete uye rinotumirwa kuburikidza nenzira imwe chete kune imwe mudziyo, uye ipapo mhando nhatu dzakasiyana dzedata dzinoparadzaniswa.