USB 3.2 Sayansi Yodziwika (Gawo 2)

USB 3.2 Sayansi Yodziwika (Gawo 2)

M'mafotokozedwe a USB 3.2, mawonekedwe othamanga kwambiri a USB Type-C amagwiritsidwa ntchito mokwanira. USB Type-C ili ndi njira ziwiri zotumizira deta zothamanga kwambiri, zotchedwa (TX1+/TX1-, RX1+/RX1-) ndi (TX2+/TX2-, RX2+/RX2-). M'mbuyomu, USB 3.1 idangogwiritsa ntchito imodzi mwa njira zotumizira deta, pomwe tchanelo china chinalipo ngati chosungira. Mu USB 3.2, mayendedwe onsewa amatha kuyatsidwa pansi pazifukwa zoyenera ndikukwaniritsa liwiro lalikulu la 10 Gbps panjira iliyonse, zomwe zimapangitsa kuti pakhale 20 Gbps. Ndi 128b/132b encoding, liwiro lenileni la deta limatha kufika pafupifupi 2500 MB/s, lomwe ndi kuwirikiza mwachindunji poyerekeza ndi USB 3.1 yamakono. Ndizofunikira kudziwa kuti njira yosinthira mu USB 3.2 imakhala yopanda msoko ndipo sifunikira kuchitapo kanthu kwapadera kuchokera kwa wogwiritsa ntchito.

Chizindikiro ndi njira yotchingira chingwe cha USB3.1 imagwirizana ndi USB3.0. Ulamuliro wa impedance wa SDP wotetezedwa mzere wosiyana umayendetsedwa pa 90Ω ± 5Ω, ndipo mzere umodzi wa coaxial umayendetsedwa pa 45Ω ± 3Ω. Kuchedwa kwamkati kwa awiriwa osiyana ndi ochepera 15ps / m, ndipo kutaya kwina kwina ndi zizindikiro zina zimagwirizana ndi USB3.0. Kapangidwe ka chingwe kumasankhidwa malinga ndi momwe ntchito ikugwiritsidwira ntchito ndi ntchito ndi zofunikira zamagulu: VBUS: mawaya a 4 kuti atsimikizire kutuluka kwa magetsi ndi magetsi; Vconn: Zosiyana ndi VBUS, zimangopereka magetsi a 3.0 ~ 5.5V; amangopereka mphamvu ku chip cha chingwe; D +/D-: USB 2.0 chizindikiro; kuthandizira kutsogolo ndi kubwerera kumbuyo, pali zizindikiro ziwiri kumbali ya socket; TX +/- ndi RX +/-: Magulu a 2 a zizindikiro, zizindikiro za 4, zothandizira kutsogolo ndi kulowetsa kumbuyo; CC: chizindikiro cha kasinthidwe, kutsimikizira ndi kuyang'anira kugwirizana pakati pa gwero ndi terminal; SUB: chizindikiro cha ntchito yowonjezera, chitha kugwiritsidwa ntchito ngati mawu.

Ngati kutsekeka kwa mzere wotetezedwa kumawongoleredwa pa 90Ω ± 5Ω, ndipo mzere wa coaxial umagwiritsidwa ntchito, kubweza kwa chizindikiro kumadutsa mu GND yotetezedwa. Kwa mizere ya coaxial yokhala ndi malekezero amodzi, kusokoneza kumayendetsedwa pa 45Ω ± 3Ω. Komabe, kusankha malo olumikizirana ndi mawonekedwe a chingwe kumadalira zochitika zogwiritsira ntchito komanso kutalika kwa zingwe zosiyanasiyana.

USB 3.2 Gen 1 × 1 - SuperSpeed, 5 Gbit/s (0.625 GB/s) kuchuluka kwa data panjira imodzi pogwiritsa ntchito encoding ya 8b/10b, yofanana ndi USB 3.1 Gen 1 ndi USB 3.0.
USB 3.2 Gen 1×2 - SuperSpeed+, 10 Gbit/s (1.25 GB/s) yatsopano ya data panjira ziwiri pogwiritsa ntchito 8b/10b encoding.
USB 3.2 Gen 2×1 - SuperSpeed+, 10 Gbit/s (1.25 GB/s) kuchuluka kwa data panjira imodzi pogwiritsa ntchito 128b/132b encoding, yofanana ndi USB 3.1 Gen 2.
USB 3.2 Gen 2×2 - SuperSpeed+, 20 Gbit/s (2.5 GB/s) yatsopano ya data panjira ziwiri pogwiritsa ntchito 128b/132b encoding.