USB 3.2 Pūtaiao rongonui (Wahanga 2)

USB 3.2 Pūtaiao rongonui (Wahanga 2)

I roto i te whakatakotoranga USB 3.2, ka tino whakamahia te ahuatanga tere-tere o te USB Type-C. Ko te USB Momo-C e rua nga waahana whakawhiti raraunga tere tere, kua whakaingoatia (TX1+/TX1-, RX1+/RX1-) me (TX2+/TX2-, RX2+/RX2-). I mua, ko te USB 3.1 anake te whakamahi i tetahi o nga hongere ki te tuku raraunga, me tetahi atu hongere kei te noho hei taapiri. I roto i te USB 3.2, ka taea te whakahoe i nga hongere e rua i raro i nga ahuatanga e tika ana, me te whakatutuki i te tere tuku teitei o te 10 Gbps mo ia hongere, ka puta he 20 Gbps katoa. Ma te whakawaehere 128b/132b, ka taea e te tere o te raraunga te tae ki te 2500 MB/s, he rearua tika ki te USB 3.1 o naianei. He mea tika kia mohio ko te whakawhiti i te hongere i roto i te USB 3.2 he tino maamaa, kaore e hiahiatia he mahi motuhake mai i te kaiwhakamahi.

Ko te tikanga tukatuka tohu me te whakamarumaru o te taura USB3.1 he rite ki te USB3.0. Ko te mana impedance o te SDP shielded differential line is controlled at 90Ω ± 5Ω, and the single-ended coaxial line is controlled at 45Ω ± 3Ω. Ko te roa o roto o te takirua rereke he iti iho i te 15ps/m, a ko etahi atu mate whakaurunga me etahi atu tohu e rite ana ki te USB3.0. Ko te hanganga taura ka tohua kia rite ki te ahuatanga o te tono me te mahi me nga whakaritenga waahanga: VBUS: 4 waea ki te whakarite i te rere o te ngaohiko me te waa; Vconn: He rereke mai i te VBUS, ka whakarato noa i te awhe ngaohiko o 3.0 ~ 5.5V; ka tuku hiko anake ki te maramara o te taura; D+/D-: USB 2.0 tohu; hei tautoko i te whakauru whakamua me te whakamuri, e rua nga tohu tohu kei te taha turanga; TX+/- me RX+/-: 2 roopu tohu, 4 takirua tohu, tautoko i te whakauru whakamua me te whakamuri; CC: tohu whirihoranga, whakau me te whakahaere i te hononga i waenga i te puna me te tauranga; SUB: tohu mahi roha, ka taea te whakamahi mo te ororongo.

Mena kei te whakahaeretia te impedance o te raina rereke whakamarumaru i te 90Ω ± 5Ω, ka whakamahia he raina coaxial, ko te hokinga whenua tohu kei roto i te GND parepare. Mo nga raina coaxial kotahi-mutunga, ka whakahaerehia te impedance i te 45Ω ± 3Ω. Heoi, ko te kowhiringa o nga tohu hononga me te hanganga taura ka whakawhirinaki ki nga ahuatanga tono me te roa o nga taura rereke.

USB 3.2 Gen 1×1 – SuperSpeed, 5 Gbit/s (0.625 GB/s) reiti tohu raraunga i runga i te 1 ara e whakamahi ana i te whakawaehere 8b/10b, he rite tonu ki te USB 3.1 Gen 1 me te USB 3.0.
USB 3.2 Gen 1×2 – SuperSpeed+, hou 10 Gbit/s (1.25 GB/s) reeti raraunga i runga i nga ara 2 ma te whakamahi i te whakawaehere 8b/10b.
USB 3.2 Gen 2×1 – SuperSpeed+, 10 Gbit/s (1.25 GB/s) reeti raraunga i runga i te 1 ara ma te whakamahi whakawaehere 128b/132b, he rite ki te USB 3.1 Gen 2.
USB 3.2 Gen 2×2 – SuperSpeed+, hou 20 Gbit/s (2.5 GB/s) reeti raraunga i runga i nga ara 2 ma te whakamahi i te whakawaehere 128b/132b.