I-USB 3.2 Isayensi Edumile (Ingxenye 2)

I-USB 3.2 Isayensi Edumile (Ingxenye 2)

Ekucacisweni kwe-USB 3.2, isici sesivinini esikhulu se-USB Type-C sisetshenziswa ngokugcwele. I-USB Type-C ineziteshi ezimbili zokudlulisa idatha enesivinini esikhulu, eziqanjwe (TX1+/TX1-, RX1+/RX1-) kanye (TX2+/TX2-, RX2+/RX2-). Ngaphambilini, i-USB 3.1 ibisebenzisa ishaneli eyodwa kuphela ukudlulisa idatha, esinye isiteshi sikhona njengesipele. Ku-USB 3.2, womabili amashaneli angavulwa ngaphansi kwezimo ezifanele futhi afinyelele isivinini esikhulu sokudlulisela esingu-10 Gbps esiteshini ngasinye, okuholela engqikithini engu-20 Gbps. Ngombhalo wekhodi ongu-128b/132b, isivinini sedatha sangempela singafinyelela cishe ku-2500 MB/s, okuwukuphinda kabili okuqondile uma kuqhathaniswa ne-USB 3.1 yamanje. Kuyaqapheleka ukuthi ukushintshwa kwesiteshi ku-USB 3.2 akunamthungo ngokuphelele futhi akudingi noma yimiphi imisebenzi ekhethekile evela kumsebenzisi.

Isignali kanye nendlela yokucubungula yokuvikela yekhebula le-USB3.1 ihambisana naleyo ye-USB3.0. Ukulawulwa kwe-impedance komugqa wokuhlukanisa ovikelekile we-SDP kulawulwa ku-90Ω ± 5Ω, futhi umugqa we-coaxial onesiphelo esisodwa ulawulwa ku-45Ω ± 3Ω. Ukubambezeleka kwangaphakathi kwepheya ehlukile kungaphansi kuka-15ps/m, futhi okunye ukulahlekelwa kokufaka nezinye izinkomba zihambisana ne-USB3.0. Isakhiwo sekhebula sikhethwa ngokusho kwesimo sohlelo lokusebenza kanye nezidingo zomsebenzi kanye nesigaba: I-VBUS: izintambo ezingu-4 zokuqinisekisa ukugeleza kwe-voltage kanye namanje; I-Vconn: Ihlukile ku-VBUS, inikeza kuphela ububanzi be-voltage engu-3.0 ~ 5.5V; inikeza kuphela amandla ku-chip yekhebula; I-D+/D-: Isignali ye-USB 2.0; ukusekela ukufakwa phambili nokuhlehla, kukhona amapheya amabili amasignali ohlangothini lwesokhethi; I-TX+/- ne-RX+/-: Amaqembu ama-2 wamasignali, amapheya angu-4 wamasignali, asekela ukufakwa phambili nokuhlehla; I-CC: isignali yokumisa, eqinisekisa futhi elawula ukuxhumana phakathi komthombo nesiphetho; I-SUB: isignali yomsebenzi wokunweba, ingasetshenziselwa umsindo.

Uma ukuvinjelwa komugqa ohlukile ovikelekile kulawulwa ku-90Ω ± 5Ω, futhi kusetshenziswa umugqa we-coaxial, ukubuyiselwa komhlaba wesignali nge-GND evikelekile. Ngemigqa ye-coaxial enesiphetho esisodwa, i-impedance ilawulwa ku-45Ω ± 3Ω. Noma kunjalo, ukukhethwa kwamaphuzu okuxhuma kanye nesakhiwo sekhebula kuncike ezimweni zohlelo lokusebenza kanye nobude bezintambo ezahlukene.

I-USB 3.2 Gen 1×1 – SuperSpeed, 5 Gbit/s (0.625 GB/s) izinga lokusayina idatha phezu komzila ongu-1 kusetshenziswa ukubhala ngekhodi okungu-8b/10b, okufanayo ne-USB 3.1 Gen 1 ne-USB 3.0.
I-USB 3.2 Gen 1×2 – SuperSpeed+, izinga ledatha entsha engu-10 Gbit/s (1.25 GB/s) emigwaqweni emi-2 kusetshenziswa umbhalo wekhodi ongu-8b/10b.
I-USB 3.2 Gen 2×1 – SuperSpeed+, 10 Gbit/s (1.25 GB/s) isilinganiso sedatha emzileni ongu-1 kusetshenziswa umbhalo wekhodi ongu-128b/132b, ngokufanayo ne-USB 3.1 Gen 2.
I-USB 3.2 Gen 2×2 – SuperSpeed+, izinga ledatha entsha engu-20 Gbit/s (2.5 GB/s) emigwaqweni emi-2 kusetshenziswa umbhalo wekhodi ongu-128b/132b.