Bayanin Canje-canje a cikin Mu'amalar USB

Bayanin Canje-canje a cikin Mu'amalar USB

Daga cikin su, sabon ma'auni na USB4 (kamar USB4 Cable, USBC4 Zuwa USB C) a halin yanzu yana tallafawa mu'amalar Type-C kawai. A halin yanzu, USB4 ya dace da mahara musaya / ladabi ciki har da Thunderbolt 3 (40Gbps Data), USB, Nuni Port, da PCIe. Siffofinsa na tallafawa 5A 100W USB Cable samar da wutar lantarki da watsa bayanai na USB C 10Gbps (ko USB 3.1 Gen 2) sun kafa tushe don yaɗuwar girma.

Bayanin Nau'in-A/Nau'in-B, Mini-A/Mini-B, da Micro-A/Micro-B

1) Halayen Lantarki Na Nau'in-A da Nau'in-B
Ƙididdiga ya haɗa da VBUS (5V), D-, D+, da GND. Saboda amfani da watsa siginar daban-daban, ƙirar lamba na USB 3.0 A Namiji da USB 3.1 Nau'in A yana ba da fifikon haɗin wutar lantarki (VBUS/GND sun fi tsayi), layin bayanan (D-/D+ sun fi guntu).
2) Halayen Lantarki na Mini-A/Mini-B da Micro-A/Micro-B
Mini USB da Micro USB (kamar USB3.1 Micro B TO A) suna da lambobi biyar: VCC (5V), D-, D+, ID, da GND. Idan aka kwatanta da USB 2.0, ana ƙara ƙarin layin ID don tallafawa aikin USB OTG.
3) Kebul OTG Interface (Za a iya yin aiki azaman HOST ko na'ura)
An raba USB zuwa HOST (host) da NA'URARA (ko bawa). Wasu na'urori na iya buƙatar yin aiki azaman HOST a wasu lokuta kuma azaman na'ura a wasu lokuta. Samun tashoshin USB guda biyu na iya cimma wannan, amma almubazzaranci ne. Idan tashar USB guda ɗaya zata iya aiki azaman HOST da na'ura, zai fi dacewa. Don haka, an haɓaka USB OTG.
Yanzu tambayar ta taso: Ta yaya kebul OTG ke dubawa ya san ko yakamata yayi aiki azaman HOST ko NA'URARA? Ana amfani da layin gano ID don ayyukan OTG (mafi girma ko ƙananan matakin layin ID yana nuna ko tashar USB tana aiki a yanayin HOST ko na'ura).
ID = 1: Na'urar OTG tana aiki a yanayin bawa.
ID = 0: Na'urar OTG tana aiki a yanayin masauki.
Gabaɗaya, masu sarrafa kebul ɗin da aka haɗa cikin kwakwalwan kwamfuta suna tallafawa aikin OTG kuma suna ba da kebul na OTG ke dubawa (haɗe da mai sarrafa USB) don Mini USB ko Micro USB da sauran musaya tare da layin ID don shigar da amfani.

Idan akwai karamin kebul na USB guda ɗaya (ko Micro USB interface), kuma idan kuna son amfani da yanayin masaukin OTG, to kuna buƙatar kebul na OTG. Misali, kebul na OTG na Mini USB yana nunawa a ƙasa a cikin adadi: Kamar yadda kuke gani, kebul na USB Mini USB OTG yana da ƙarshen ɗaya a matsayin soket na USB A kuma ɗayan ƙarshen azaman Mini USB plug. Saka Mini USB filogi a cikin Mini USB OTG interface na injin, kuma na'urar USB da aka haɗa ya kamata a shigar da ita cikin soket na USB A a ɗayan ƙarshen. Misali, kebul na USB. Kebul na OTG na USB zai rage layin ID, don haka injin ya san cewa yakamata yayi aiki azaman mai watsa shiri don haɗawa da na'urar bawa na waje (kamar filasha USB).