USB 3.2 Basics (Chikamu 1)

USB 3.2 Basics (Chikamu 1)

Zvinoenderana neyazvino USB yekutumidza zita gungano kubva ku USB-IF, iyo yekutanga USB 3.0 uye USB 3.1 haicha shandiswa. Yese USB 3.0 zviyero zvichanzi USB 3.2. Iyo USB 3.2 yakajairwa inosanganisira ese ekare USB 3.0/3.1 interfaces. Iyo USB 3.1 interface yave kunzi USB 3.2 Gen 2, nepo yekutanga USB 3.0 interface ichinzi USB 3.2 Gen 1. Tichifunga kuenderana, kumhanya kwekufambisa kwe USB 3.2 Gen 1 i5Gbps, USB 3.2 Gen 2 i10Gbps, uye USB 3.2 Gen 2×2 i20Gb. Naizvozvo, tsananguro nyowani ye USB 3.1 Gen 1 uye USB 3.0 inogona kunzwisiswa sechinhu chimwe chete, nemazita akasiyana. Gen 1 uye Gen 2 inoreva nzira dzakasiyana dzeencoding uye bandwidth mashandisirwo mazinga, nepo Gen 1 uye Gen 1 × 2 ari intuitively akasiyana maererano nematashi. Parizvino, akawanda epamusoro-ekupedzisira mamaboards ane USB 3.2 Gen 2 × 2 mainterface, mamwe acho ari Type-C interfaces uye mamwe ma USB interface. Parizvino, Type-C interfaces dzakawanda.Misiyano pakati peGen1, Gen2 neGen3

1. Transmission bandwidth: Iyo yakakura bandwidth ye USB 3.2 ndeye 20 Gbps, nepo iyo ye USB 4 iri 40 Gbps.

2. Transmission protocol: USB 3.2 inonyanya kutumira data kuburikidza ne USB protocol, kana kugadzirisa USB neDP kuburikidza neDP Alt Mode (imwe nzira). Nepo USB 4 inovhara iyo USB 3.2, DP uye PCIe mapuroteni mumapaketi edata uchishandisa tekinoroji tekinoroji uye inoatumira panguva imwe chete.
3. DP kutapurirana: Vose vanogona kutsigira DP 1.4. USB 3.2 inogadzirisa zvinobuda kuburikidza neDP Alt Mode (imwe nzira); nepo USB 4 isingangogadziri kuburitsa kuburikidza neDP Alt Mode (imwe nzira), asi zvakare inogona kuburitsa DP data nekuburitsa data mapaketi eiyo USB4 tunnel protocol.
4. PCIe kutapurirana: USB 3.2 haitsigire PCIe, nepo USB 4 inoita. Iyo PCIe data inotorwa kuburikidza ne USB4 tunnel protocol data pakiti.
5. TBT3 kutapurirana: USB 3.2 haitsigire, asi USB 4 inoita. Iri kuburikidza ne USB4 tunnel protocol data mapaketi ayo PCIe uye DP data inotorwa.
6. Host to Host: Kukurukurirana pakati pevagamuchiri. USB 3.2 haitsigire, asi USB 4 inoita. Chikonzero chikuru cheizvi ndechekuti USB 4 inotsigira PCIe protocol kutsigira basa iri.

Ongorora: Tunneling tekinoroji inogona kutorwa senzira yekubatanidza data kubva kune akasiyana maprotocol pamwe chete, nemhando inosiyaniswa kuburikidza neiyo data packet musoro.
Mu USB 3.2, kutapurirana kweDisplayPort vhidhiyo uye USB 3.2 data kunoitika kuburikidza neakasiyana chiteshi adapta, nepo mu USB 4, DisplayPort vhidhiyo, USB 3.2 data, uye PCIe data inogona kufambiswa kuburikidza nechiteshi chimwe chete. Uyu ndiwo musiyano mukuru pakati pezviviri izvi. Unogona kutarisa dhayagiramu inotevera kuti uwane kunzwisisa kwakadzama.

Iyo USB4 chiteshi inogona kufungidzirwa senzira inobvumira mhando dzakasiyana dzemotokari kupfuura. USB data, DP data, uye PCIe data inogona kutorwa semota dzakasiyana. Munzira imwe chete, motokari dzakasiyana dzakarongwa uye dzinofamba nenzira yakarongeka. Iyo yakafanana USB4 chiteshi inotamisa marudzi akasiyana e data nenzira imwechete. USB3.2, DP, uye PCIe data inotanga kuungana pamwe chete uye inotumirwa kunze kuburikidza nechiteshi chimwe chete kune chimwe chishandiso, uye ipapo marudzi matatu akasiyana edata anoparadzaniswa.