Ubumenyi Buzwi bwa USB 3.2 (Igice cya 2)

Ubumenyi Buzwi bwa USB 3.2 (Igice cya 2)

Mu bisobanuro bya USB 3.2, uburyo bwo kohereza amakuru bwihuta cyane bwa USB Type-C bukoreshwa neza. USB Type-C ifite imiyoboro ibiri yo kohereza amakuru yihuta cyane, yitwa (TX1+/TX1-, RX1+/RX1-) na (TX2+/TX2-, RX2+/RX2-). Mbere, USB 3.1 yakoreshaga imwe muri iyo miyoboro gusa mu kohereza amakuru, indi miyoboro ikaba ihari nk'iy'inyuma. Muri USB 3.2, imiyoboro yombi ishobora gukoreshwa mu bihe bikwiye kandi ikagera ku muvuduko ntarengwa wo kohereza amakuru wa 10 Gbps kuri buri muyoboro, bigatuma habaho 20 Gbps. Hamwe no gukodesha 128b/132b, umuvuduko nyawo w'amakuru ushobora kugera kuri 2500 MB/s, bikaba byikuba kabiri ugereranije na USB 3.1 iriho ubu. Ni ngombwa kumenya ko guhindura imiyoboro muri USB 3.2 bidasaba akazi kadasanzwe kandi ntibisaba umukoresha gukora ibintu bidasanzwe.

Uburyo bwo gutunganya ikimenyetso n'uburinzi bw'insinga ya USB3.1 buhuye n'ubwa USB3.0. Igenzura ry'impedansi ry'umurongo utandukanya wa SDP rigenzurwa kuri 90Ω ± 5Ω, naho umurongo wa coaxial urangira umwe ugenzurwa kuri 45Ω ± 3Ω. Gutinda imbere kw'impande zombi ni munsi ya 15ps/m, kandi ikindi gihombo cyo kwinjira n'ibindi bimenyetso bihuye na USB3.0. Imiterere y'insinga itoranywa hakurikijwe uko ikoreshwa n'ibisabwa mu mikorere n'icyiciro: VBUS: insinga 4 zo kwemeza ko voltage n'amashanyarazi bigenda neza; Vconn: Bitandukanye na VBUS, itanga gusa voltage iri hagati ya 3.0 ~ 5.5V; itanga gusa ingufu kuri chip y'insinga; D + / D-: Ikimenyetso cya USB 2.0; kugira ngo ishyigikire imbere n'inyuma, hari amabara abiri ku ruhande rw'isoko; TX + / - na RX + / -: amatsinda 2 y'ibimenyetso, amabara 4 y'ibimenyetso, ashyigikira imbere n'inyuma; CC: ikimenyetso cyo gushyiraho, cyemeza kandi kigacunga isano iri hagati y'isoko na terminal; SUB: ikimenyetso cy'imikorere yo kwagura, gishobora gukoreshwa mu majwi.

Iyo impedance y'umurongo utandukanya urinda igenzurwa kuri 90Ω ± 5Ω, kandi hagakoreshwa umurongo wa coaxial, kugaruka k'ubutaka bw'ikimenyetso binyura muri GND irinzwe. Ku mirongo ya coaxial ifite iherezo rimwe, impedance igenzurwa kuri 45Ω ± 3Ω. Ariko, guhitamo aho umurongo uhuza n'imiterere y'insinga biterwa n'ibihe byo gukoreshwa n'uburebure bw'insinga zitandukanye.

USB 3.2 Gen 1 × 1 - SuperSpeed, 5 Gbit/s (0.625 GB/s) ikoresha uburyo bwo gutanga amakuru ku murongo umwe hakoreshejwe uburyo bwa 8b/10b, kimwe na USB 3.1 Gen 1 na USB 3.0.
USB 3.2 Gen 1 × 2 - SuperSpeed+, igipimo gishya cya 10 Gbit/s (1.25 GB/s) ku mirongo ibiri ikoresheje uburyo bwa 8b/10b.
USB 3.2 Gen 2×1 – SuperSpeed+, 10 Gbit/s (1.25 GB/s) ikoresha uburyo bwa interineti bwo gukurura amakuru ku murongo umwe hakoreshejwe uburyo bwa 128b/132b, kimwe na USB 3.1 Gen 2.
USB 3.2 Gen 2×2 – SuperSpeed+, igipimo gishya cya 20 Gbit/s (2.5 GB/s) ku mirongo ibiri ikoresheje uburyo bwa 128b/132b.