Umklamo kanye Nokukhiqiza i-Thunderbolt Dock PCB Yokudokha Okusheshayo

Izakhiwo ze-Thunderbolt kanye ne-USB4-class zingathutha izinhlobo eziningi zephrothokholi kusixhumanisi esabiwe ngesivinini esikhulu. Idokhumenti ye-USB-IF ichaza ngokusobala i-USB3, i-DisplayPort kanye ne-PCIe tunneling ku-USB4. Isilawuli sedokhi noma i-router siqeda leyo ndwangu futhi siveze imisebenzi engezansi ngokuya ngomklamo womkhiqizo.

I-Thunderbolt/USB4-class docking iyindwangu eqondisiwe kunokuba umuthi we-hub olula. Isixhumanisi esingaphezulu singathutha izinhlobo eziningi zephrothokholi futhi sabe i-bandwidth ngokuguquguqukayo, kuyilapho abalawuli noma ama-port aphansi eveza imisebenzi ye-USB, isibonisi kanye ne-PCIe-derived ngokuya ngomklamo. Lokho kwenza i-topology yomlawuli, i-firmware kanye nokucushwa kwe-port kube yingxenye yokwakheka kukagesi—hhayi nje isofthiwe engeziwe ngemva kokuhlanganiswa kwe-PCB.

Ngakho-ke iphakheji yokukhiqiza kufanele ifake umdwebo wamabhulokhi okhomba ukukhiqizwa kweThunderbolt okuqondiwe noma ikhono le-USB4, izindima zechweba elingaphezulu/eliphansi, imisebenzi ehlanganisiwe kanye nanoma yimaphi amadivayisi ahlukene e-hub/bridge. Lokhu kuvimbela iphutha elikhulu lokuthola ulwazi: uma sicabanga ukuthi ama-dock amabili anenani elifanayo lezixhumi angasebenzisa imikhawulo efanayo ye-PCB. Isabelomali sawo sesiteshi, izidingo zabalawuli kanye nezinhloso zokuthobela imithetho zingase zihluke kakhulu.

I-USB-C ichaza uhlelo lokuxhuma/ikhebula; i-USB4 ichaza ukwakheka kwe-USB okusheshayo; i-Thunderbolt ubuchwepheshe/uphawu lwe-Intel olunezidingo ezithile zesizukulwane. Zingasebenzisana ngezindlela ezichaziwe, kodwa i-USB-C receptacle iyodwa ayibonisi i-Thunderbolt dock.

I-USB-C ichaza uhlelo lokuxhuma; i-USB4 ichaza ukwakheka kwe-USB okushesha kakhulu; i-Thunderbolt ubuchwepheshe be-Intel obuqinisekisiwe obunezidingo ezithile zokukhiqiza. Ulwazi lwamanje lwe-Intel lubonisa amakhono ahlukene kakhulu phakathi kwe-Thunderbolt 4 ne-Thunderbolt 5, kuyilapho i-USB-IF iqhubeka nokuthuthukisa imininingwane ye-USB4 namathuluzi okuhambisana nayo. Ngakho-ke, isihloko sokukhiqiza kufanele simise ukwenziwa okuqondiwe kanye nokubuyekezwa kwemininingwane yephrojekthi kunokuba kufakwe ikhodi eqinile yesivinini esisodwa noma inani lokushaja njengento yonke.

Ulwazi lwamanje lwepulatifomu ye-Thunderbolt ye-Intel lubonisa nokuthi amakhono ayashintsha ngokukhiqizwa. Ngokukhiqiza okuqukethwe, indlela ephephile ukubiza imfuneko yokukhiqiza eqondiwe yekhasimende kanye nokuhambisana nomthetho kunokushicilela isitatimende esisodwa esihlala njalo se-bandwidth, isibonisi noma sokushaja kuyo yonke i-Thunderbolt dock.

Lo mehluko uphinde uthinte amalebula, izintambo kanye nemishini yokuhlola. Ikhebula lohlobo C elanele imodi eyodwa lingase lingasekeli ukuziphatha kwe-Thunderbolt/USB4 okuqondiswe kakhulu, futhi umklamo okwazi i-USB4 awuwona umkhiqizo oqinisekiswe yi-Thunderbolt ngokuzenzakalelayo. Ukuhlolwa kokusebenza kwefektri kungafakazela izindlela zokusebenza ezichazwe ngamakhasimende; isitifiketi esisemthethweni kanye nokusetshenziswa kwelogo kuhlala kulawulwa yizidingo zohlelo ezifanele.

Kumazinga edatha e-Thunderbolt/USB4-class, yonke indlela isebenza njengesiteshi: ukuqhekeka kokudlulisela, ama-trace e-PCB, ama-via, amadivayisi okuvikela e-ESD/, izixhumi kanye nekhebula konke kunegalelo ekulahlekelweni nasekukhanyeni . Ukuvimbela okulawulwayo kuyadingeka kodwa akwanele ngokwako.

Kula mazinga edatha, i-PCB iyingxenye eyodwa yesiteshi esisuka komunye kuya komunye esihlanganisa ukuqhekeka kwephakheji, ama-trace, ama-via, amadivayisi okuvikela, izixhumi kanye nekhebula. Ukulahleka kokufakwa kuchaza amandla alahlekile ngesiteshi, kuyilapho ukulahleka kokubuya kubonisa ukungaqhubeki kwe-impedance; kokubili kubalulekile ngoba ukushaya nje i-impedance ehlukile akuqinisekisi i-eye margin eyanele kumamukeli. Imodeli yesiteshi sekhasimende noma imithetho yokuklama kufanele iveze ukuthi ingxenye yebhodi ivunyelwe ukudla ini.

Ukwenziwa kufanele kulondoloze ukujiya kwe-dielectric, i-geometry yethusi kanye nezici zobuso ezithathwa yimodeli yesiteshi. Uhlelo lokukhiqiza lungaxhumanisa ukukhethwa kwezinto ze-PCB ezisheshayo kanye nezidingo zokulawula i-impedance kusukela ekuqoqweni kwe-stack-up kanye nokulahlekelwa okukhishwe.

• Cacisa imingcele yomndeni wezinto ezibonakalayo kanye ne-Dk/Df uma umklamo uyidinga.
• Phatha ukuqaliswa kwezixhumi kanye namasimu njengokuguqulwa okulingisiwe, hhayi izinyathelo ezizimele.
• Lawula i-backdrill, i-blind-via noma ezinye izici ze-via kuphela lapho ukwakheka/isiteshi kuzidinga khona.
• Gwema i-ESD engagunyaziwe noma ukushintsha izingxenye zemodi evamile emigqeni ebalulekile.

Ukukhethwa kwezinto kufanele kulandele leso sabelomali. Ukulahleka kwe-dielectric, ukugoba kwethusi, i-trace geometry kanye nobukhulu besendlalelo kuthinta ukuncishiswa, kodwa i-laminate elahlekelwa kancane ayidingeki ngokuzenzakalelayo kuyo yonke imizila. Umenzi kufanele aqhathanise i-stack-up geometry efinyelelekayo nezinhloso zokulahlekelwa/ukungavimbeli ezikhishwe, abhale phansi noma yisiphi isiphakamiso esilingana nezinto futhi agweme ukushintshana okushintsha izakhiwo zikagesi ngaphandle kwemvume. Lokhu kunikeza ukuthengwa isizathu esiqinisekile sezinto zekhwalithi ephezulu uma zidingeka ngempela.

Ama-docks anesivinini esikhulu angadinga umzila oyinkimbinkimbi phakathi kwabalawuli kanye nezixhumi eziningi ze-Type-C noma zokubonisa. Ukushintshashintsha kwethula imiphumela yokungaqhubeki kanye ne-stub, ngakho isu lokuhlanganisa kanye nelokuphunyuka kufanele libuyekezwe ndawonye.

Ukuguqulwa kwe-Via kungangeza ukungaqhubeki kwe-capacitive/inductive kanye nokusetshenziswa ngama-stubs, yingakho ama-docks aqinile anesivinini esikhulu angasebenzisa ama-antipads alungiselelwe kahle, ama-blind vias, i-backdrilling noma ezinye izakhiwo. Ukukhetha okulungile kuncike ekushintsheni kwesendlalelo, ubude bokulandelela, i-stack-up kanye ne-channel margin esele. Izinqubo ezithuthukisiwe nge-Advanced via kufanele ziqinisekiswe yimithetho yokulingisa noma yokuklama, hhayi ezingezwe njengezici zokumaketha.

Ama-retimer noma ama-redriver angandisa i-margin yesiteshi kwezinye izakhiwo, kodwa ukusetshenziswa kwawo kuncike ku-topology kagesi, ubude bokulandelela, inani lezixhumi kanye namakhono okulawula. Kufanele aphathwe njengezakhi zokuklama ezincike ku-firmware/ukucushwa—hhayi izingxenye ezijwayelekile okumele zifakwe yi-Thunderbolt dock ngayinye.

Ngokufanayo, i-HDI noma i-backdrilling ingase ifaneleke ekusetshenzisweni okusheshayo okukhulu, kuyilapho omunye umklamo osebenzayo ungahlangabezana nesabelomali sesiteshi sawo ngaphandle kwazo.

Ama-Retimer nama-redriver anemibandela efanayo. I-retimer ingabuyisa isignali ngokuyinqamula nokuyithumela kabusha, kuyilapho i-redriver ngokuvamile inikeza ukulungiswa kwe-analog; ukuziphatha kwedivayisi kanye nokuhambisana kwephrothokholi kuyahluka. Ukubekwa kwayo, amawashi okubhekisela, ubuqotho bamandla kanye ne-firmware/ukucushwa kuba yingxenye ye-topology eqinisekisiwe. Uma umklamo wokuqala ungawadingi, ukufaka eyodwa 'ngokuphepha' akuyona intuthuko yokukhiqiza—kuwukuklanywa kabusha.

Ama-Thunderbolt docks avame ukuhlanganisa abalawuli besivinini esikhulu nokuguqulwa kwamandla okukhulu kanye nama-port amaningi asebenzayo. Ukulethwa Kwamandla e-USB kungaxoxisana ngamandla okusingatha kanye namandla angaphansi lapho kusetshenziswa khona, kanti i-dock ingasebenzisa ne-adaptha yangaphandle ukuhlinzeka ngama-rail ayo angaphakathi.

I-Thunderbolt dock ingathwala amandla amakhulu kanye nezilawuli zesivinini esikhulu, ama-port amaningi kanye nemisebenzi yokubonisa/inethiwekhi. Ukulethwa Kwamandla e-USB kungaxoxisana ngamandla okusingatha noma aphansi, futhi i-adaptha yangaphandle ivame ukunikeza isabelomali sangaphakathi se-dock. Isihlahla samandla kufanele sichaze ukuqagela komthwalo ngasikhathi sinye, ukuvikelwa, ukulandelana kanye nemikhawulo yokushisa ukuze i-PCB ingahlolwa ngokumelene nesamba esingenangqondo samandla e-headline e-port ngayinye.

Amandla okulawula, abalawuli kanye nezindlela zamandla aphezulu kungadala ukuminyana okukhulu kokushisa. I-PCB kumele igcine ama-vias okushisa, ukusabalala kwethusi kanye nesikhala sezingxenye esichazwe umklamo, futhi uhlelo lwe-enclosure/heat-spreader kumele luqinisekiswe ngokwehlukana ezingeni lomkhiqizo.

Ukubuyekezwa kokukhiqiza kungabhekana nemiphumela yokuphathwa kokushisa kwe-PCB kanye nokuhlanganiswa ngaphandle kokufuna isilinganiso samandla esisodwa esijwayelekile kuwo wonke ama-dock e-Thunderbolt.

Ukuguqulwa kwamandla nakho kudala ukusebenzisana kwe-electromagnetic kanye ne-thermal nemizila yesivinini esikhulu. Ama-node okushintsha, ama-inductor kanye nabalawuli abashisayo kufanele bahloniphe isu lokuhlukaniswa kwendlela yokwakheka kanye nendlela yokubuyela emuva; ukuthululwa kwethusi kanye nama-vias okushisa kumele kuhlale njengoba kukhululiwe. Ukukhiqiza kungaqinisekisa izimo zamandla ezixoxiswane ngazo kanye namacala omthwalo akhethiwe, kuyilapho izinga lokushisa eligcwele kanye nesitifiketi sokushaja kudinga ukuqinisekiswa okuhlukile kwesistimu.

Izilawuli ze-Thunderbolt/USB4 kanye namadivayisi ahambisanayo angasebenzisa amaphakheji e-fine-pitch noma aqedwe phansi. Umkhawulo wokuhlanganisa uthintwa ukwakheka kwe-stencil , ukuthamba kwebhodi, ukulawula ukunamathisela, ukubekwa kanye nephrofayili yokugeleza kabusha — ikakhulukazi emabhodini anezindawo ezinkulu zamandla ethusi kanye nomzila oqinile wesivinini esikhulu.

Izilawuli zedokhi ezinesivinini esikhulu zingasebenzisa i-BGA enkulu noma amanye amaphakheji aqediwe phansi ane-escape routing eningi. Amafasitela enqubo yokuhlanganisa ancike ekufakweni kwe-paste, i-warpage yebhodi, isisindo sokushisa kanye nephrofayili yokugeleza kabusha. Uma ibhodi liphinde liphethe izixhumi ezinkulu ze-Type-C, i-DisplayPort/HDMI noma amandla, amathuluzi okusekela kanye nemisebenzi yesibili kungadingeka ukuvimbela isisindo sesixhumi ukuthi singabeki engcupheni inqubo ye-fine-pitch.

Indlela yokukhiqiza ingahlanganisa ukuhlanganiswa kwe-BGA PCB nokuhlolwa kwe-AOI kanye ne-X-ray lapho amalunga afihliwe adinga ukuqinisekiswa. Izindlela zokuhlola kufanele zixhunywe nephakheji yangempela kanye nohlelo lokwamukelwa kwamakhasimende kunesimangalo esibanzi sokuthi i-X-ray yodwa ifakazela ukuthi idokodo elisheshayo lihle.

I-X-ray iwusizo kumajoyinti akhethiwe afihliwe, kodwa izindlela zokuhlola kumele zibe ngezokufaka kanye nezingozi. Amaphutha, ukuvulwa, amabhuloho kanye nokukhubazeka kohlobo lwekhanda elisecaleni kunezimpawu ezihlukile, futhi i-BGA eyamukelekayo ngokubonakalayo ayiqinisekisi ukusebenza kwephrothokholi. Indlela eqinile yekhwalithi ihlanganisa ukuqinisekiswa kwesihloko sokuqala, i-AOI, i-X-ray eqondisiwe, imithetho yokulungiswa kabusha elawulwayo kanye nokuhlolwa kokusebenza okusheshayo.

Ukulawulwa kwe-Warpage kudinga ukunakwa okukhethekile mayelana nama-BGA amakhulu okulawula ngoba ibhodi lesivinini esikhulu lingahlanganisa izakhiwo ezincane ze-dielectric nesixhumi esindayo kanye nethusi elinamandla. Ukusekelwa kwephaneli, ibhalansi yethusi kanye nephrofayili yokugeleza kabusha kufanele kubuyekezwe ndawonye. Uma ukulungiswa kabusha kuvunyelwe kusilawuli esibalulekile, indlela yokugunyazwa kufanele ifake i-X-ray yangemva kokulungiswa kabusha kanye nokuqinisekiswa kokusebenza kunokwamukelwa kwe-solder kuphela.

Ukuhlolwa kukagesi akubonisi ukusebenza kwephrothokholi. Uhlelo lokuqinisekisa i-Thunderbolt dock kufanele lumboze isixhumanisi se-host esiqondiwe, amadivayisi e-Thunderbolt/USB4 noma e-USB angaphansi, izindlela zokubonisa, imisebenzi ethathwe kwi-PCIe lapho ikhona, ukuziphatha kokulethwa kwamandla kanye nezindlela zokuhambisana nokubuyela emuva ezidingekayo.

Ukuqinisekiswa kokusebenza kufanele kusebenzise ukwakheka, hhayi nje izixhumi ngazinye. Kuye ngomklamo, lokhu kungafaka phakathi ukusungulwa kwesixhumanisi seThunderbolt/USB4, ukuthungela i-USB3, ukuthungela i-DisplayPort, imisebenzi engezansi esuselwa ku-PCIe, izinto ezisetshenziswayo ze-USB ezivamile, ukulethwa kwamandla kanye nezindlela ezihambisanayo emuva. Izindawo ezihlukile zokuthobela i-USB4 ze-USB-IF zibonisa ukuthi kungani ukuhlolwa okunengqondo/kwephrothokholi kuhlukile ekuqhubekeni okulula kukagesi.

I-USB-IF igcina ukuhlolwa kokuhambisana okuhlukile kwemisebenzi ye-USB4 enengqondo kanye ne-tunneling, okubonisa ukuthi kungani ukuqinisekiswa kwephrothokholi kungaphezu kokuhlola ukuqhubeka okulula. Ekukhiqizeni, ikhasimende kufanele lichaze isethi encane yezinga lemboni yokuhlolwa, izinto ezifakiwe, izintambo, ababungazi kanye nezindinganiso zokupasa/zokwehluleka.

Ukukhiqiza kungenza ukuhlolwa kokusebenza okuchazwe ngamakhasimende kuyilapho isitifiketi esisemthethweni sihlala siwuhlelo oluhlukile olulawulwa yizinhlangano ezifanele zezindinganiso kanye nomnikazi womkhiqizo.

Ukuhlolwa kokukhiqiza kusadingeka kube okusebenzayo. Ikhasimende kufanele lichaze isethi ephindaphindwayo enama-host avunyiwe, amakhebula, izibonisi, amadivayisi okugcina/enethiwekhi kanye nemigomo yokudlula/yokwehluleka; i-NPI ingasebenzisa i-matrix ebanzi yokusebenzisana. Izimpahla zokuhlola zegolide kanye nezinguqulo ze-firmware kumele zilawulwe ngoba ukushintsha ikhebula noma i-firmware yomsingathi kungashintsha imiphumela ngisho noma i-PCBA ingashintshi.

Ukutholakala kwesilawuli sesivinini esikhulu, i-firmware, ukucushwa kwe-EEPROM, izingxenye zokuvikela kanye nezixhumi kungahlanganiswa ngokuqinile nokuqinisekiswa. Ukufaka ingxenye "efanayo" kungashintsha ukulahlekelwa kokufakwa, ukuziphatha kwephrothokholi noma isimo sesitifiketi.

I-NPI iyisigaba sokukhiya isiteshi sikagesi kanye nokucushwa ndawonye. I-stack-up, izinto zokwakha, ngesakhiwo, isilawuli kanye nama-MPN edivayisi yokuvikela, i-firmware, idatha ye-EEPROM/ukucushwa kanye nesethi yekhebula/yokuhlola kufanele iqoshwe njengesisekelo esisodwa esiqinisekisiwe. Noma yiluphi ushintsho lwengxenye noma lokwenziwa kamuva oluthinta isiteshi kufanele lube nendlela yokubuyekeza ecacile esikhundleni sokuphathwa njengokushintshana kokuthenga okuvamile.

Ngesikhathi se-NPI, khiya ama-MPN avunyiwe, i-firmware/ukucushwa , ukubuyekezwa kwe-PCB, ukuhlanganiswa kanye nokusetha ikhebula lokuhlola ngaphambi kokukhiqiza okuphindaphindiwe. Ububanzi bokuthola ulwazi bungafaka phakathi ukuthola ulwazi ngaphansi kwezindlela ezivunyelwe amakhasimende futhi kugcinwe amarekhodi okwakha ama-lot alandelayo.

Lokhu kubaluleke kakhulu ekuphathweni komjikelezo wokuphila. Idivayisi ye-ESD engasasebenzi, isixhumi noma i-retimer ingaphoqa ukuqinisekiswa kabusha ngisho noma ukushintshwa kweshidi ledatha kubonakala kuseduze. Ngakho-ke ukuthengwa kufanele kwaziwe ukuthi yiziphi izinto ze-BOM ezibaluleke kakhulu ngogesi nokuthi yiziphi ezivunyelwe ezinye. Ububanzi bokukhiqiza bungasekela ukutholakala okulawulwayo kanye nokulandelelwa kwezindawo, kodwa umnikazi womklamo kufanele avume izinguquko ezingathinta ukuhambisana noma ukusebenzisana.

Umhlinzeki we -Thunderbolt Dock PCB kufanele akwazi ukuhumusha izidingo zesiteshi zibe ukwenziwa okulawulwayo, ukuhlanganisa amaphakheji alawulayo aqinile, ukuphatha imishini yokuxhumanisa ye-USB-C nokwenza i-matrix yokuhlola yesivinini esiphezulu evunyelwene ngayo. Buza ukuthi i-impedance, ukulawulwa kwezinto ezibonakalayo, ngezakhiwo, i-X-ray, ukuphinda kusetshenziswe kanye nokulandelela ukucushwa kuphathwa kanjani.