USB 3.2 Mashahurin Kimiyya (Sashe na 2)

USB 3.2 Mashahurin Kimiyya (Sashe na 2)

A cikin ƙayyadaddun kebul na 3.2, ana amfani da fasalin babban saurin USB Type-C gabaɗaya. USB Type-C yana da tashoshin watsa bayanai masu sauri guda biyu, mai suna (TX1+/TX1-, RX1+/RX1-) da (TX2+/TX2-, RX2+/RX2-). A baya can, USB 3.1 kawai yana amfani da ɗaya daga cikin tashoshi don watsa bayanai, tare da ɗayan tashar da ke kasancewa azaman madadin. A cikin USB 3.2, ana iya kunna tashoshi biyu a ƙarƙashin yanayin da suka dace kuma cimma matsakaicin saurin watsawa na 10 Gbps ga kowane tashoshi, yana haifar da jimlar 20 Gbps. Tare da ɓoye 128b/132b, ainihin saurin bayanai zai iya kaiwa kusan 2500 MB/s, wanda shine ninki biyu kai tsaye idan aka kwatanta da USB 3.1 na yanzu. Ya kamata a lura cewa tashar tashoshi a cikin kebul na 3.2 ba ta da matsala kuma baya buƙatar kowane aiki na musamman daga mai amfani.

Hanyar sarrafa sigina da garkuwar kebul na USB3.1 sun yi daidai da na USB3.0. Ana sarrafa ikon sarrafa impedance na SDP garkuwar layin banbanta a 90Ω ± 5Ω, kuma ana sarrafa layin coaxial guda ɗaya a 45Ω ± 3Ω. Jinkiri na ciki na bambance-bambancen biyu bai wuce 15ps/m ba, kuma sauran asarar shigarwa da sauran alamomi sun yi daidai da USB3.0. An zaɓi tsarin kebul ɗin bisa ga yanayin aikace-aikacen da aiki da buƙatun rukuni: VBUS: Wayoyin 4 don tabbatar da kwararar wutar lantarki da na yanzu; Vconn: Bambanci da VBUS, yana ba da kewayon ƙarfin lantarki ne kawai na 3.0 ~ 5.5V; kawai yana ba da wutar lantarki zuwa guntu na kebul; D+/D-: USB 2.0 sigina; don tallafawa gaba da baya shigarwa, akwai nau'i-nau'i na sigina a gefen soket; TX +/- da RX +/-: 2 ƙungiyoyi na sigina, 4 nau'i-nau'i na sigina, goyon bayan gaba da baya sakawa; CC: siginar sanyi, tabbatarwa da sarrafa haɗin kai tsakanin tushen da tashar; SUB: siginar aikin faɗaɗa, ana iya amfani dashi don sauti.

Idan ana sarrafa impedance na layin bambancin garkuwar a 90Ω ± 5Ω, kuma ana amfani da layin coaxial, alamar dawowar ƙasa ta hanyar GND mai kariya. Don layin coaxial masu ƙarewa ɗaya, ana sarrafa impedance a 45Ω ± 3Ω. Koyaya, zaɓin wuraren haɗin kai da tsarin kebul ya dogara da yanayin aikace-aikacen da tsayin igiyoyi daban-daban.

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 1 × 2 - SuperSpeed ​​+, sabon 10 Gbit/s (1.25 GB/s) ƙimar bayanai sama da hanyoyi 2 ta amfani da 8b/10b encoding.
USB 3.2 Gen 2 × 1 - SuperSpeed ​​+, 10 Gbit / s (1.25 GB / s) ƙimar bayanai akan layin 1 ta amfani da 128b/132b encoding, iri ɗaya da USB 3.1 Gen 2.
USB 3.2 Gen 2 × 2 - SuperSpeed ​​+, sabon 20 Gbit/s (2.5 GB/s) ƙimar bayanai sama da hanyoyi 2 ta amfani da 128b/132b encoding.