Chidule cha Kusintha kwa Ma USB Interfaces

Chidule cha Kusintha kwa Ma USB Interfaces

Pakati pawo, muyezo waposachedwa wa USB4 (monga USB4 Cable, USBC4 To USB C) pakadali pano umangogwira ma interface a Type-C. Pakadali pano, USB4 imagwirizana ndi ma interface/protocol angapo kuphatikiza Thunderbolt 3 (40Gbps Data), USB, Display Port, ndi PCIe. Zinthu zake zothandizira 5A 100W USB C Cable power supply ndi USB C 10Gbps (kapena USB 3.1 Gen 2) data transmission ndiye maziko a kutchuka kwakukulu.

Chidule cha Mtundu-A/Mtundu-B, Mini-A/Mini-B, ndi Micro-A/Micro-B

1) Makhalidwe a Magetsi a Mtundu-A ndi Mtundu-B
Pinout imaphatikizapo VBUS (5V), D-, D+, ndi GND. Chifukwa cha kugwiritsa ntchito ma differential signal transmission, kapangidwe ka contact ka USB 3.0 A Male ndi USB 3.1 Type A kamayang'ana kwambiri kulumikizana kwa mphamvu (VBUS/GND ndi yayitali), kutsatiridwa ndi deta (D-/D+ ndi yayifupi).
2) Makhalidwe a Magetsi a Mini-A/Mini-B ndi Micro-A/Micro-B
Mini USB ndi Micro USB (monga USB3.1 Micro B TO A) zili ndi ma contact asanu: VCC (5V), D-, D+, ID, ndi GND. Poyerekeza ndi USB 2.0, mzere wina wa ID wawonjezedwa kuti uthandizire magwiridwe antchito a USB OTG.
3) Chiyankhulo cha USB OTG (Chingagwire ntchito ngati HOST kapena CHIPANGIZO)
USB imagawidwa m'magulu a HOST (host) ndi DEVICE (kapena slave). Zipangizo zina zingafunike kugwira ntchito ngati HOST nthawi zina komanso ngati DEVICE nthawi zina. Kukhala ndi madoko awiri a USB kungathandize izi, koma ndi kutaya zinthu. Ngati doko limodzi la USB likhoza kugwira ntchito ngati HOST ndi DEVICE, zingakhale zosavuta kwambiri. Chifukwa chake, USB OTG idapangidwa.
Tsopano funso likubuka: Kodi mawonekedwe a USB OTG amadziwa bwanji ngati ayenera kugwira ntchito ngati HOST kapena DEVICE? Mzere wozindikira ID umagwiritsidwa ntchito pa ntchito ya OTG (mlingo wapamwamba kapena wotsika wa mzere wa ID umasonyeza ngati doko la USB likugwira ntchito mu HOST kapena DEVICE mode).
ID = 1: Chipangizo cha OTG chimagwira ntchito mu kachitidwe ka kapolo.
ID = 0: Chipangizo cha OTG chimagwira ntchito mu mawonekedwe a host.
Kawirikawiri, ma USB controller omwe amaphatikizidwa mu ma chips amathandizira magwiridwe antchito a OTG ndipo amapereka mawonekedwe a USB OTG (olumikizidwa ndi USB controller) a Mini USB kapena Micro USB ndi ma interface ena okhala ndi ID line kuti ayikidwe ndikugwiritsidwa ntchito.

Ngati pali Mini USB interface imodzi yokha (kapena Micro USB interface), ndipo ngati mukufuna kugwiritsa ntchito OTG host mode, ndiye kuti mufunika chingwe cha OTG. Mwachitsanzo, chingwe cha OTG cha Mini USB chawonetsedwa pansipa pachithunzichi: Monga mukuonera, chingwe cha Mini USB OTG chili ndi mbali imodzi ngati soketi ya USB A ndi mbali inayo ngati pulagi ya Mini USB. Ikani pulagi ya Mini USB mu mawonekedwe a Mini USB OTG a makinawo, ndipo chipangizo cha USB cholumikizidwacho chiyenera kulumikizidwa mu soketi ya USB A mbali inayo. Mwachitsanzo, USB flash drive. Chingwe cha USB OTG chidzachepetsa mzere wa ID, kotero makinawo amadziwa kuti ayenera kugwira ntchito ngati host kuti alumikizane ndi chipangizo chakunja (monga USB flash drive).