USB-IF Sabuwar yarjejeniyar suna na USB ta bayyana cewa ba za a ƙara amfani da ainihin USB3.0 da USB3.1 ba, duk ma'aunin USB3.0 ana kiran su USB3.2, ma'aunin USB3.2 za a haɗa tsohon kebul na USB 3.0/3.1 duka. A cikin ma'auni na USB3.2, ana kiran USB3.1 interface USB3.2 Gen 2, kuma asalin USB3.0 ke dubawa ana kiransa USB3.2 Gen 1, la'akari da dacewa, saurin watsa USB3.2 Gen 1 shine 5Gbps, USB3.2 Gen2 watsa gudun ne 10Gbps, USB3.2 Gen2x2 watsa gudun ne 20Gbps, don haka USB3.1 Gen1 da USB3.0 sabon bayani dalla-dalla za a iya fahimtar a matsayin abu daya, amma sunan ya bambanta.Gen1 da Gen2 ana fahimtar ma'anar cewa hanyar ɓoye ta bambanta, amfani da bandwidth ya bambanta, kuma Gen1 da Gen1x2 sune tashoshi daban-daban.A halin yanzu, an san cewa yawancin manyan uwayen uwayen uwa suna da kebul na USB3.2Gen2x2, wasu na TYPE C ne, wasu kuma na USB ne, kuma na TYPE C na yanzu galibi .Bambanci tsakanin Gen1 da Gen2, Gen3
Kwatanta USB3.2 da sabuwar USB4
1. bandwidth na watsawa: USB 3.2 ya kai 20Gbps, yayin da USB4 shine 40Gbps.
2. Canja wurin yarjejeniya: USB 3.2 galibi yana watsa bayanai ta hanyar ka'idar USB, ko saita USB da DP ta hanyar DP Alt Mode (madadin yanayin).USB4 yana ɗaukar ka'idodin USB 3.2, DP da PCIe cikin fakiti ta hanyar fasahar tunneling kuma yana aika su a lokaci guda.
3. DP watsawa: iya tallafawa DP 1.4.USB 3.2 yana daidaita fitarwa ta hanyar DP Alt Mode;Baya ga daidaita fitarwa ta hanyar DP Alt Mode (madadin yanayin), USB4 kuma yana iya fitar da bayanan DP ta hanyar fakitin yarjejeniyar tunneling na USB4.
4, PCIe watsa: USB 3.2 baya goyan bayan PCIe, USB4 yana goyan bayan.Ana fitar da bayanan PCIe ta hanyar fakitin tsarin tunneling na USB4.
5, TBT3 watsawa: USB 3.2 ba a tallafawa, ana tallafawa USB4, wato, ta hanyar fakitin yarjejeniyar rami na USB4 don cire bayanan PCIe da DP.
6, Mai watsa shiri zuwa Mai watsa shiri: sadarwa tsakanin mai watsa shiri da mai watsa shiri, USB3.2 baya goyan bayan, USB4 goyon baya.Yawancin USB4 yana goyan bayan ka'idar PCIe don tallafawa wannan aikin.
Lura: Ana iya ganin tunnelling azaman dabara don haɗa bayanai daga ƙa'idodi daban-daban, ta amfani da kanun labarai don bambance nau'ikan.
A cikin USB 3.2, ana watsa watsawar bidiyo na DisplayPort da bayanan USB 3.2 akan adaftan tashar tashoshi daban-daban, yayin da a cikin USB4, ana iya watsa bidiyon DisplayPort, bayanan USB 3.2 da bayanan PCIe akan tashar guda ɗaya, wanda shine babban bambanci tsakanin su biyun.Kuna iya ganin hoton da ke ƙasa don zurfafa fahimtar ku.
Ana iya tunanin tashoshin USB4 a matsayin hanyoyin da za su iya wuce nau'ikan motoci daban-daban, kuma bayanan USB, bayanan DP, da bayanan PCIe ana iya tunanin su azaman motoci daban-daban.Akwai motoci daban-daban a layi daya suna tuƙi cikin tsari, kuma USB4 yana watsa nau'ikan bayanai daban-daban akan tashar guda ɗaya.USB3.2, DP da PCIe data farko ana tattara su tare, a aika su ta tashar guda ɗaya, a aika zuwa na'urorin juna, sannan a raba su zuwa nau'ikan bayanai 3 daban-daban.
USB3.2 na USB tsarin definition
A cikin ƙayyadaddun kebul na 3.2, ana amfani da cikakken yanayin saurin USB Type-C.USB Type-C yana da tashoshi 2 masu saurin canja wurin bayanai, mai suna (TX1+/TX1-, RX1+/RX1-) da (TX2+/TX2-, RX2+/RX2-), a baya USB 3.1 kawai ya yi amfani da ɗaya daga cikin tashoshin don watsa bayanai. , kuma ɗayan tashar ta kasance ta hanyar madadin.A cikin USB 3.2, ana iya kunna tashoshi biyu idan sun dace, kuma ana iya samun matsakaicin saurin watsawa na 10Gbps a kowace tashar, ta yadda jimlar ta kasance 20Gbps, ta amfani da 128b/132b encoding, ainihin saurin bayanai zai iya kaiwa kusan 2500MB/s, wanda kai tsaye ya ninka na USB 3.1 na yau.Ya kamata a ambata cewa tashar tashar USB 3.2 ba ta da matsala kuma ba ta buƙatar aiki na musamman ta mai amfani.
Ana kula da kebul na USB3.1 kamar yadda ake bi da kebul na USB 3.0.Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren SDP yana sarrafawa a 90Ω ± 5Ω, kuma ana sarrafa layin coaxial guda ɗaya a 45Ω ± 3Ω.Jinkiri a cikin nau'in bambance-bambancen bai wuce 15ps / m ba, kuma sauran asarar shigarwa da sauran alamun sun yi daidai da USB3.0, kuma an zaɓi tsarin kebul bisa ga ayyuka da nau'ikan yanayin yanayin aikace-aikacen da buƙatu: VBUS: 4 wayoyi don tabbatar da ƙarfin lantarki da na yanzu;Vconn: sabanin VBUS, kawai yana samar da kewayon ƙarfin lantarki na 3.0 ~ 5.5V;Yi amfani da guntu na USB kawai;D+/D-: siginar USB 2.0, don tallafawa gaba da baya plugging, akwai nau'i-nau'i na sigina a gefen soket;TX +/- da RX +/-: 2 sigina na sigina, 4 nau'i-nau'i na sigina, goyan bayan gaba da baya interpolation;CC: Sanya sigina, tabbatarwa da sarrafa haɗin tushen-tasha;SUB: Siginar aiki mai tsawo, akwai don sauti.
Idan an sarrafa maƙasudin layin bambancin garkuwar a 90Ω ± 5Ω, ana amfani da layin coaxial, alamar dawowar ƙasa ta hanyar GND mai kariya, kuma ana sarrafa layin coaxial guda ɗaya a 45Ω ± 3Ω, amma a ƙarƙashin nau'ikan kebul daban-daban. , yanayin aikace-aikacen na mahaɗin yana ƙayyade zaɓin lambobi da zaɓin tsarin kebul.
USB 3.2 Gen 1 × 1 - SuperSpeed , 5 Gbit / s (0.625 GB / s) ƙimar siginar bayanai akan layin 1 ta amfani da 8b/10b encoding, iri ɗaya da USB 3.1 Gen 1 da USB 3.0.
USB 3.2 Gen.
USB 3.2 Gen 2x1 - SuperSpeed +, 10 Gbit/s (1.25 GB/s) ƙimar bayanai akan layi 1 ta amfani da 128b/132b encoding, iri ɗaya da USB 3.1 Gen 2.
USB 3.2 Gen 2x2 - SuperSpeed+, sabon 20 Gbit/s (2.5 GB/s) ƙimar bayanai sama da hanyoyi 2 ta amfani da 128b/132b encoding.
Lokacin aikawa: Yuli-17-2023