USB-NGATI Msonkhano waposachedwa wa USB ukunena kuti USB3.0 yoyambirira ndi USB3.1 sizidzagwiritsidwanso ntchito, miyezo yonse ya USB3.0 imatchedwa USB3.2, USB3.2 idzakhala mawonekedwe akale a USB 3.0/3.1 onse ophatikizidwa. kulowa mu USB3.2 standard, USB3.1 mawonekedwe amatchedwa USB3.2 Gen 2, ndipo choyambirira USB3.0 mawonekedwe amatchedwa USB3.2 Gen 1, poganizira ngakhale, USB3.2 Gen 1 transmission speed ndi 5Gbps, USB3.2 Kuthamanga kwa Gen2 ndi 10Gbps, USB3.2 Gen2x2 kutumizira liwiro ndi 20Gbps, kotero USB3.1 Gen1 ndi USB3.0 matanthauzo atsopano amatha kumveka ngati chinthu chimodzi, koma dzina ndi losiyana.Gen1 ndi Gen2 zimamveka kutanthauza kuti njira yolembera ndi yosiyana, kugwiritsidwa ntchito kwa bandwidth ndi kosiyana, ndipo Gen1 ndi Gen1x2 ndi njira zosiyana.Pakadali pano, zimadziwika kuti ma boardboard ambiri apamwamba amakhala ndi mawonekedwe a USB3.2Gen2x2, ena ndi mawonekedwe a TYPE C, ena ndi mawonekedwe a USB, ndipo mawonekedwe apano a TYPE C nthawi zambiri amakhala .Kusiyana pakati pa Gen1 ndi Gen2, Gen3
Kuyerekeza kwa USB3.2 ndi USB4 yaposachedwa
1. Kutumiza kwa bandwidth: USB 3.2 ikufika ku 20Gbps, pamene USB4 ndi 40Gbps.
2. Transfer protocol: USB 3.2 makamaka imatumiza deta kudzera mu protocol ya USB, kapena imakonza USB ndi DP kudzera mu DP Alt Mode (njira ina).USB4 imayika ma protocol a USB 3.2, DP ndi PCIe m'mapaketi kudzera muukadaulo wowongolera ndikutumiza nthawi yomweyo.
3. Kutumiza kwa DP: kumatha kuthandizira DP 1.4.USB 3.2 imakonza zotuluka kudzera mu DP Alt Mode;Kuphatikiza pakusintha zomwe zatuluka kudzera mu DP Alt Mode (njira ina), USB4 imathanso kuchotsa deta ya DP kudzera pamapaketi a protocol a USB4.
4, kufalitsa kwa PCIe: USB 3.2 sichigwirizana ndi PCIe, USB4 imathandizira.Zambiri za PCIe zimachotsedwa kudzera pa USB4 tunneling protocol mapaketi.
5, kufalitsa kwa TBT3: USB 3.2 sichimathandizidwa, USB4 imathandizidwa, ndiye kuti, kudzera pamapaketi a protocol a USB4 kuti muchotse data ya PCIe ndi DP.
6, Host to Host: kulumikizana pakati pa wolandila ndi wolandila, USB3.2 sichirikiza, thandizo la USB4.Makamaka USB4 imathandizira protocol ya PCIe kuthandizira ntchitoyi.
Chidziwitso: Kuwongolera kumatha kuwonedwa ngati njira yophatikizira deta kuchokera ku ma protocol osiyanasiyana, pogwiritsa ntchito mitu kusiyanitsa mitundu.
Mu USB 3.2, kutumiza kwa kanema wa DisplayPort ndi data ya USB 3.2 kumatumizidwa pa ma adapter osiyanasiyana, pomwe mu USB4, vidiyo ya DisplayPort, data ya USB 3.2 ndi data ya PCIe imatha kufalitsidwa panjira yomweyo, komwe ndiko kusiyana kwakukulu pakati pa ziwirizi.Mutha kuwona chithunzichi pansipa kuti mukulitse kumvetsetsa kwanu.
Njira za USB4 zitha kuganiziridwa ngati misewu yomwe imatha kudutsa mitundu yosiyanasiyana yamagalimoto, ndipo data ya USB, data ya DP, ndi data ya PCIe imatha kuganiziridwa ngati magalimoto osiyanasiyana.Pali magalimoto osiyanasiyana munjira imodzi yoyendetsa mwadongosolo, ndipo USB4 imatumiza mitundu yosiyanasiyana ya data panjira imodzi.Data ya USB3.2, DP ndi PCIe imayamba kuphatikizidwa pamodzi, kutumizidwa kudzera munjira imodzi, kutumizidwa kuzipangizo za wina ndi mzake, kenako ndikugawidwa mumitundu itatu ya data.
Tanthauzo la mawonekedwe a chingwe cha USB3.2
M'mafotokozedwe a USB 3.2, mawonekedwe othamanga kwambiri a USB Type-C amagwiritsidwa ntchito mokwanira.USB Type-C ili ndi ma tchanelo awiri othamanga kwambiri, otchedwa (TX1+/TX1-, RX1+/RX1-) ndi (TX2+/TX2-, RX2+/RX2-), m'mbuyomu USB 3.1 inkagwiritsa ntchito imodzi mwa tchanelo kutumizira deta. , ndipo tchanelo chinacho chinalipo mwanjira yosunga zobwezeretsera.Mu USB 3.2, njira zonse ziwiri zimatha kuthandizidwa ngati kuli koyenera, ndipo liwiro lalikulu la 10Gbps pa njira iliyonse likhoza kutheka, kotero kuti ndalamazo ndi 20Gbps, pogwiritsa ntchito encoding 128b / 132b, liwiro lenileni la deta likhoza kufika pafupifupi 2500MB / s, zomwe. ndi molunjika kuwirikiza kawiri kwa USB 3.1 yamasiku ano.Ndikoyenera kutchula kuti kusintha kwa USB 3.2 kwachanera kumakhala kopanda msoko ndipo sikufuna ntchito yapadera ndi wogwiritsa ntchito.
Zingwe za USB3.1 zimachitidwa mofanana ndi USB 3.0.Kuwongolera kwa Impedance: Kulepheretsa kwa mzere wosiyana wa SDP wotetezedwa kumayendetsedwa pa 90Ω ± 5Ω, ndipo mzere umodzi wa coaxial umayendetsedwa pa 45Ω ± 3Ω.Kuchedwetsa mkati mwa awiriwa osiyanitsa ndi ochepera 15ps/m, ndipo zotsala zotayika zoyikapo ndi zisonyezo zina zimagwirizana ndi USB3.0, ndipo mawonekedwe a chingwe amasankhidwa molingana ndi ntchito ndi magulu a zochitika ndi zofunikira: VBUS: 4 mawaya kuonetsetsa kuti voteji ndi panopa;Vconn: mosiyana ndi VBUS, imangopereka magetsi a 3.0 ~ 5.5V;Mphamvu kokha chip cha chingwe;D +/D-: Chizindikiro cha USB 2.0, pofuna kuthandizira kutsogolo ndi kubwezera kumbuyo, pali zizindikiro ziwiri kumbali yazitsulo;TX +/- ndi RX +/-: zizindikiro za 2, zizindikiro za 4, kuthandizira kutsogolo ndi kumasulira;CC: Konzani ma siginecha, tsimikizirani ndikuwongolera kulumikizana ndi magwero;SUB: Chizindikiro chowonjezera, chopezeka kuti chikhale chomvera.
Ngati kutsekeka kwa mzere wotetezedwa kumawongoleredwa pa 90Ω ± 5Ω, mzere wa coaxial umagwiritsidwa ntchito, kubwezeredwa kwapansi kwa chizindikiro kumadutsa mu GND yotetezedwa, ndipo mzere wa coaxial womwewo umayendetsedwa pa 45Ω ± 3Ω, koma pansi pa utali wosiyanasiyana wa chingwe. , zochitika zogwiritsira ntchito mawonekedwe zimatsimikizira kusankha kwa ojambula ndi kusankha kwa chingwe.
USB 3.2 Gen 1x1 - SuperSpeed, 5 Gbit/s (0.625 GB/s) kuchuluka kwa data panjira imodzi pogwiritsa ntchito 8b/10b encoding, chimodzimodzi ndi USB 3.1 Gen 1 ndi USB 3.0.
USB 3.2 Gen 1x2 - SuperSpeed+, data yatsopano ya 10 Gbit/s (1.25 GB/s) m'njira ziwiri pogwiritsa ntchito encoding ya 8b/10b.
USB 3.2 Gen 2x1 - SuperSpeed+, 10 Gbit/s (1.25 GB/s) kuchuluka kwa data panjira imodzi pogwiritsa ntchito 128b/132b encoding, yofanana ndi USB 3.1 Gen 2.
USB 3.2 Gen 2x2 - SuperSpeed+, data yatsopano ya 20 Gbit/s (2.5 GB/s) m'njira ziwiri pogwiritsa ntchito encoding ya 128b/132b.
Nthawi yotumiza: Jul-17-2023