Isishwankathelo sotshintsho kwi-USB Interfaces

Isishwankathelo sotshintsho kwi-USB Interfaces

Phakathi kwazo, umgangatho wamva nje we-USB4 (ofana ne-USB4 Cable, i-USBC4 To USB C) okwangoku uxhasa kuphela ii-interfaces ze-Type-C. Okwangoku, i-USB4 iyahambelana nee-interfaces/protocols ezininzi kuquka i-Thunderbolt 3 (40Gbps Data), i-USB, i-Display Port, kunye ne-PCIe. Iimpawu zayo zokuxhasa umbane we-5A 100W USB C Cable kunye nokudluliselwa kwedatha ye-USB C 10Gbps (okanye i-USB 3.1 Gen 2) zibeka isiseko sokwenziwa kwe-intanethi ibe nkulu.

Isishwankathelo se-Type-A/Type-B, i-Mini-A/Mini-B, kunye ne-Micro-A/Micro-B

1) Iimpawu zoMbane zohlobo-A kunye nohlobo-B
I-pinout iquka i-VBUS (5V), i-D-, i-D+, kunye ne-GND. Ngenxa yokusetyenziswa kokudluliselwa kwesignali eyahlukileyo, uyilo loqhagamshelwano lwe-USB 3.0 A Male kunye ne-USB 3.1 Type A lubeka phambili uqhagamshelo lwamandla (i-VBUS/GND inde), kulandele imigca yedatha (i-D-/D+ imfutshane).
2) Iimpawu zoMbane zeMini-A/Mini-B kunye neMicro-A/Micro-B
I-Mini USB kunye ne-Micro USB (ezifana ne-USB3.1 Micro B TO A) zinezixhobo zoqhagamshelwano ezintlanu: i-VCC (5V), i-D-, i-D+, i-ID, kunye ne-GND. Xa kuthelekiswa ne-USB 2.0, kongezwa umgca we-ID owongezelelweyo ukuxhasa ukusebenza kwe-USB OTG.
3) I-USB OTG Interface (Ingasebenza njenge-HOST okanye i-DEVICE)
I-USB yahlulwe yaba yi-HOST (host) kunye ne-DEVICE (okanye slave). Ezinye izixhobo zinokufuna ukusebenza njenge-HOST ngamanye amaxesha kunye ne-DEVICE ngamanye amaxesha. Ukuba nee-port ezimbini ze-USB kunokufezekisa oku, kodwa kukuchitha izixhobo. Ukuba i-port enye ye-USB ingasebenza njenge-HOST kunye ne-DEVICE, kuya kuba lula ngakumbi. Ngaloo ndlela, kwaveliswa i-USB OTG.
Ngoku kuphakama umbuzo othi: Ingaba i-USB OTG interface yazi njani ukuba kufuneka isebenze njenge-HOST okanye i-DEVICE? Umgca wokuchonga i-ID usetyenziselwa ukusebenza kwe-OTG (inqanaba eliphezulu okanye eliphantsi lomgca we-ID libonisa ukuba i-USB port isebenza kwi-HOST okanye kwi-DEVICE mode).
ID = 1: Isixhobo se-OTG sisebenza kwimo yekhoboka.
ID = 0: Isixhobo se-OTG sisebenza kwimo ye-host.
Ngokubanzi, abalawuli be-USB abadityaniswe kwiitships baxhasa ukusebenza kwe-OTG kwaye babonelela nge-interface ye-USB OTG (eqhagamshelwe kwi-USB controller) ye-Mini USB okanye i-Micro USB kunye nezinye ii-interfaces ezine-ID line eza kufakwa kwaye isetyenziswe.

Ukuba kukho i-Mini USB interface enye kuphela (okanye i-Micro USB interface), kwaye ukuba ufuna ukusebenzisa i-OTG host mode, kuya kufuneka intambo ye-OTG. Umzekelo, intambo ye-OTG ye-Mini USB iboniswe ngezantsi kumfanekiso: Njengoko ubona, intambo ye-Mini USB OTG inesiphelo esinye njenge-USB A socket kwaye esinye isiphelo njenge-Mini USB plug. Faka i-Mini USB plug kwi-Mini USB OTG interface yomatshini, kwaye isixhobo se-USB esiqhagamshelweyo kufuneka sifakwe kwi-USB A socket kwelinye icala. Umzekelo, i-USB flash drive. Intambo ye-USB OTG iya kwehlisa umgca we-ID, ukuze umatshini wazi ukuba kufuneka usebenze njenge-host ukuze uqhagamshele kwisixhobo sangaphandle sekhoboka (njenge-USB flash drive).