Txheej txheem cej luam ntawm Kev Hloov hauv USB Interfaces
Ntawm lawv, qhov tseeb USB4 tus qauv (xws li USB4 Cable, USBC4 Rau USB C) tam sim no tsuas yog txhawb hom-C interfaces. Meanwhile, USB4 yog sib xws nrog ntau yam interfaces/protocols xws li Thunderbolt 3 (40Gbps Data), USB, Display Port, thiab PCIe. Nws cov yam ntxwv ntawm kev txhawb nqa 5A 100W USB C Cable fais fab mov thiab USB C 10Gbps (lossis USB 3.1 Gen 2) cov ntaub ntawv xa mus nteg lub hauv paus rau kev nrov nrov.
Txheej txheem cej luam ntawm Hom-A/Type-B, Mini-A/Mini-B, thiab Micro-A/Micro-B
1) Cov yam ntxwv hluav taws xob ntawm Hom-A thiab Hom-B
Lub pinout suav nrog VBUS (5V), D-, D +, thiab GND. Vim yog kev siv cov teeb liab sib txawv, kev sib txuas lus tsim ntawm USB 3.0 A Txiv neej thiab USB 3.1 Hom A ua qhov tseem ceeb rau kev sib txuas ntawm lub zog (VBUS / GND ntev dua), ua raws li cov ntaub ntawv kab (D- / D + luv dua).
2) Cov yam ntxwv hluav taws xob ntawm Mini-A / Mini-B thiab Micro-A / Micro-B
Mini USB thiab Micro USB (xws li USB3.1 Micro B TO A) muaj tsib tus neeg: VCC (5V), D-, D+, ID, thiab GND. Piv rau USB 2.0, ib kab ID ntxiv ntxiv los txhawb USB OTG kev ua haujlwm.
3) USB OTG Interface (Yuav ua tau raws li tus tswv tsev lossis khoom siv)
USB muab faib ua HOST (tus tswv) thiab DEVICE (los yog qhev). Qee cov khoom siv yuav tsum ua raws li HOST lub sijhawm thiab ua DEVICE ntawm lwm lub sijhawm. Muaj ob lub USB chaw nres nkoj tuaj yeem ua tiav qhov no, tab sis nws yog qhov pov tseg ntawm cov peev txheej. Yog tias ib qho chaw nres nkoj USB tuaj yeem ua raws li HOST thiab DEVICES, nws yuav yooj yim dua. Yog li, USB OTG tau tsim.
Tam sim no cov lus nug tshwm sim: Yuav ua li cas USB OTG interface paub seb nws yuav tsum ua haujlwm li HOST lossis DEVICE? Tus ID nrhiav kab yog siv rau OTG kev ua haujlwm (qhov siab lossis qis ntawm kab ID qhia seb lub chaw nres nkoj USB puas ua haujlwm hauv HOST lossis DEVICE hom).
ID = 1: Cov cuab yeej OTG ua haujlwm hauv hom qhev.
ID = 0: Cov cuab yeej OTG ua haujlwm hauv hom tswv.
Feem ntau, USB controllers koom ua ke hauv cov chips txhawb OTG kev ua haujlwm thiab muab USB OTG interface (txuas mus rau USB maub los) rau Mini USB lossis Micro USB thiab lwm yam cuam tshuam nrog kab ID yuav tsum tau ntxig thiab siv.
Yog tias tsuas muaj ib qho Mini USB interface (lossis Micro USB interface), thiab yog tias koj xav siv OTG host hom, ces koj yuav xav tau OTG cable. Piv txwv li, OTG cable rau Mini USB yog qhia hauv qab no hauv daim duab: Raws li koj tuaj yeem pom, Mini USB OTG cable muaj ib kawg li USB A socket thiab lwm qhov kawg li Mini USB plug. Ntxig lub Mini USB ntsaws rau hauv Mini USB OTG interface ntawm lub tshuab, thiab cov khoom siv txuas nrog USB yuav tsum tau ntsaws rau hauv USB A qhov ntawm lwm qhov kawg. Piv txwv li, USB flash drive. USB OTG cable yuav txo qis tus ID kab, yog li lub tshuab paub tias nws yuav tsum ua tus tswv tsev txuas mus rau lwm tus qhev ntaus ntawv (xws li USB flash drive).
Post lub sij hawm: Aug-13-2025
