Ukukhiqiza i-PCB Yesiphetho Seklayenti Elingenalutho Yama-Endpoints Anikezelwe Ekude Edeskithophu

I-PCB ye-terminal yeklayenti elingenalutho kufanele iklanywe futhi ikhiqizwe njengethuluzi elizinikele leseshini elikude, hhayi njengebhodi le-PC elihlanganisiwe. Ku-architecture yakudala yehadiwe/i-firmware elingenalutho, ayikho i-CPU yenhloso ejwayelekile, ayikho isistimu yokusebenza yesicelo sendawo futhi ayikho isitoreji sedatha yesicelo sendawo. Ibhodi ligxila kuphrothokholi yephrothokholi, i-Ethernet, isibonisi, i-USB, umsindo, i-firmware kanye nobunikazi bedivayisi evikelekile.

Lokho kwakheka okuncane kushintsha kokubili ukuthengwa kanye nokuhlolwa. Imibuzo ebalulekile yokukhiqiza ukuthi ngabe indlela yenethiwekhi ihlanzekile, zonke izibonisi/izixhumi ze-USB ziyasebenza, i-firmware efanele kanye nobunikazi kuhlelwe, futhi indawo yokugcina ingasungula iseshini eqondiwe kude.

Iklayenti Leqiniso Le-Zero Lisebenzisa Ihadiwe Ye-Endpoint Ezinikele, Hhayi Ikhompyutha Ejwayelekile

Igama elithi “zero client” akufanele lisetshenziswe njengegama elifanayo neklayenti elincane elishibhile. Ku-architecture yakudala ye-PCoIP Tera2 ebhalwe yi-HP Anyware, i-endpoint ayinayo i-CPU yenhloso ejwayelekile, ayinayo isistimu yokusebenza yohlelo lokusebenza lwendawo futhi ayinayo isitoreji sedatha sendawo. Iyithuluzi lehadiwe ne-firmware elinomsebenzi walo ukusungula iseshini ekude, ukunquma ukusakaza kokubonisa nokuhlanganisa izibonisi zendawo, umsindo kanye ne-USB peripherals.

Lokho kushintsha indlela yokuthenga i-PCB. Asikho isidingo sokwenza ngcono ukusebenza kohlelo lokusebenza lwendawo noma umthamo omkhulu we-SSD. Esikhundleni salokho, ibhodi lahlulelwa ngokuziphatha kwenethiwekhi okunqunyiwe, umphumela wokubonisa, inqubomgomo ye-USB, ukuhlinzekwa kwe-firmware, ukuzinza kokushisa kanye nobunikazi bedivayisi evikelekile.

Yakha i-PCB Ezungeze iProsesa Ezinikele kanye Nezidingo Zayo Zememori/I-Flash

Iprosesa engenaklayenti isadinga ukwesekwa kwe-elekthronikhi: i-DDR noma imemori ezinikele kuye ngeplatifomu, i-flash ye-boot/firmware, ama-power rails, ama-oscillator, ama-PHY/magnetics enethiwekhi, ama-display transmitters kanye nama-interface e-USB. Umehluko ukuthi lezi zinsiza zikhonza i-firmware ye-endpoint kune-OS yohlelo lokusebenza lwendawo.

• I-fanout yeprosesa: Ukuqondisa kanye nokuhlukaniswa kwe-BGA kufanele kulandele ukwakheka kwereferensi yephrothokholi ne-silicon eduze.
• I-flash ye-firmware: Umthamo kanye ne-interface kufanele kufane negatsha le-firmware elivunyiwe kanye nesu lokubuyisela emuva/lokubuyekeza.
• Ukuvala: Imisebenzi yenethiwekhi kanye nokubonisa incike emawashini azinzile; ukushintshana kwe-oscillator kufanele kuhlale kulawulwa.
• Imemori: Phatha isikhathi/i-topology yememori njengesidingo seplatifomu yize umsebenzisi engakaze abone “umthamo we-RAM.”
• Izixhumi zokulungisa iphutha: Nikeza ukufinyelela okuphephile kokukhiqiza/ukuhlela ngaphandle kokushiya izindlela zokulungisa iphutha lensimu ezingalawulwa zivuliwe.

I-Ethernet iyindlela eyinhloko yedatha futhi ifanelwe ukubekwa phambili

Kuhlelo lokusebenza olusebenza kude, ubuqotho benethiwekhi akuyona into eyodwa ye-I/O phakathi kweziningi; yindlela yedatha ephethe ulwazi lwedeskithophu lomsebenzisi. Ngakho-ke, ukwakheka kwe-PHY, amandla kazibuthe, ikhwalithi yewashi, isivikelo sokuxhuma kanye nobuqotho bamandla kufanele kubuyekezwe njengomsebenzi oyinhloko.

• Ama-PHY-kuya-kumagnethi: Gcina i-differential routing incane futhi ibhekiselwe kusakhiwo se-Ethernet esivunyiwe.
• Ama-Magnetic/RJ45: Sebenzisa amandla kazibuthe ahlanganisiwe noma ahlukene avunyelwe kanye nokulawula i-chassis/isivikelo.
• I-ESD: Ukuvikelwa kufanele kubuyisele ugesi wesikhashana endleleni ehlosiwe ye-chassis/ground kunokuba kudlule indiza yomhlaba yeprosesa.
• Ama-LED esixhumanisi: Izinkomba ezilula zisadinga i-polarity efanele kanye nokulawula okuhlukile kwesixhumi.
• Ukuhlolwa kwethrafikhi yokukhiqiza: Ukuhlolwa kwezixhumanisi kuphela kungaphuthelwa ama-marginal pairs; sebenzisa indlela yephakethe/i-throughput noma yesikrini samaphutha efanele isikhathi sokujikeleza.

Isibonisi, i-USB kanye nomsindo yizinto ezisetshenziswa ngabasebenzisi bendawo

Iklayenti elingenalutho kusadingeka lishayele imonitha eyodwa noma ngaphezulu futhi lixhume amakhibhodi, amagundane, ama-headset, amakhadi ahlakaniphile noma amanye amadivayisi e-USB agunyaziwe. Lezo zixhumanisi ziwubuso behadiwe yendawo yekhompyutha ekude.

I-Firmware kanye nobunikazi bedivayisi kuyisithombe sokukhiqiza

Ngenxa yokuthi ayikho i-OS yohlelo lokusebenza lwendawo okufanele ifakelwe, ukulawula i-firmware kuba kubaluleke nakakhulu. Ibhodi elinehadiwe efanele kodwa i-firmware ye-endpoint engalungile, isitifiketi noma ukucushwa kungasakwazi ukusetshenziswa endaweni yamakhasimende.

• Igatsha le-Firmware: Hlanganisa inguqulo efanele ye-firmware ne-processor/hardware revision.
• I-Serial/MAC: Hlela inethiwekhi eyingqayizivele kanye nobunikazi bomkhiqizo ngokuqinisekiswa kokufundwa kabusha.
• Izitifiketi/izihluthulelo: Uma isakhiwo sisebenzisa izitifiketi zedivayisi noma ukuhlinzekwa okuphephile, chaza ukuthi ubani onikeza okhiye nokuthi ifektri iwaphatha kanjani.
• Okuzenzakalelayo kokucushwa: Okuzenzakalelayo kwenethiwekhi/iseshini kufanele kulayishwe ngokwenqubomgomo yokuthunyelwa kwamakhasimende.
• Thuthukisa indlela: I-PVT kufanele iqinisekise ukuthi amayunithi okukhiqiza angathuthukisa/ehlisa ngokusebenzisa indlela yensimu ekhishwe.

I-Endpoint Enamandla Aphansi Isadinga Umkhawulo Wokushisa Nowomandla

Amaklayenti awekho ngokuvamile anamandla aphansi kunama-PC agcwele, kodwa angasebenza ngokuqhubekayo ngezibonisi eziningi kanye nethrafikhi yenethiwekhi esebenzayo. Izivalo ezingenafeni zincike ku-PCB kanye ne-chassis ukuze zisakaze lokho kushisa ngaphandle kokugoqa noma ukunciphisa impilo yezingxenye.

• Isitimela seprosesa: Qinisekisa ukuthi i-current ingaphansi komthwalo wesibonisi/weseshini omubi kakhulu, hhayi i-OSD engasebenzi kuphela.
• Bonisa ama-PHY: Imiphumela eminingi esebenzayo ingandisa ukushisa kwendawo eduze kwezixhumi zangemuva.
• Amandla e-USB: Ugesi ongaphandle ungashintsha kakhulu i-margin encane yangaphandle ye-adaptha.
• Hlala ULINDILE: Chaza ukuthi i-network wake, amandla e-USB noma ukuphathwa kuhlala kusebenza.
• I-adaptha yamandla: Finyelela i-voltage encane yokufaka kanye nokwehla kwekhebula ngaphansi kwe-endpoint ephelele + umthwalo we-USB.

Izinzuzo Zokukhiqiza Ezivela Ku-BOM Eqinile, Encane

Ipulatifomu ezinikele engenaklayenti ingaba yinhle ekukhiqizeni ngoba ihadiwe incane futhi iyaphindaphindeka. Leyo nzuzo iyanyamalala uma ukushintsha okungalawulwa kushintsha i-PHY, imemori, i-flash noma ukuziphatha kokubonisa.

• I-silicon ebaluleke kakhulu yesikhulumi sokukhiya: Iprosesa, izingxenye zesikhombimsebenzisi sememori, i-Ethernet PHY kanye ne-firmware flash kufanele zilandele i-BOM evunyiwe.
• Izinhlobo zesixhumi sokulawula: Izinguquko ezincane ze-pinout noma isivikelo ezixhumini zesibonisi/ze-RJ45/ze-USB zingaphula i-enclosure noma uhlelo lwe-EMC.
• Sebenzisa ama-passive avunyiwe: Amanethiwekhi okubonisa iwashi, i-Ethernet kanye nesivinini esikhulu kufanele ahambisane nezidingo zokubekezelelana kanye ne-dielectric.
• Ukubuyekezwa kwehadiwe yethrekhi: Ukuhambisana kwe-firmware kumele kuhambisane nokubuyekezwa ngakunye kwe-PCB kanye nanoma yikuphi okunye okubalulekile.
• Uhlelo lomjikelezo wokuphila: Iphrothokholi enikezelwe i-silicon ingaba ne-ecosystem encane kune-PC processors; ukuhlela ukuphelelwa yisikhathi kufanele kuqale kusenesikhathi.

I-FCT Kufanele Iphele Ngeseshini Yangempela Ekude noma Ukuxilongwa Kwephrothokholi

Ama-benchmark e-PC avamile awabalulekile kuklayenti elingenalo nhlobo. Ukuhlolwa kokukhiqiza kufanele kubonise imisebenzi yokugcina eyenziwa ngumkhiqizo.

Ukuphepha kwe-USB kanye nokuqinisekiswa kuyizidingo zehadiwe kuklayenti elingenayo i-zero

Amaklayenti angekho avame ukukhethwa ngoba anciphisa indawo yokuhlasela yendawo, kodwa leyo nzuzo incike endleleni i-USB kanye nezingxenye zokuqinisekisa eziphathwa ngayo. Idokhumenti ye-HP Anyware yamaklayenti angekho e-Tera2 ichaza ukuphepha kwe-USB kanye nokusekelwa kwamadivayisi okuqinisekisa afana namakhadi ahlakaniphile kanye nokusebenza kwephasiwedi yesikhathi esisodwa. Ngakho-ke i-PCB kufanele iphathe i-USB njengesixhumi esilawulwa ukuphepha, hhayi nje ichweba elilula.

• I-topology yechweba: Beka ama-port e-USB angaphambili/angemuva ku-processor noma ihabhu ukuze inqubomgomo ye-firmware ikwazi ukuhlukanisa amakilasi edivayisi lapho isekelwa khona.
• Abafundi bamakhadi ahlakaniphile: Qinisekisa amandla kanye nokubalwa nge-reader evunyiwe, hhayi i-flash drive ejwayelekile.
• Isitoreji esivinjiwe: Uma amadivayisi okugcina izinto eziningi evinjelwe yinqubomgomo, i-FCT ingaqinisekisa ukuziphatha kwenqubomgomo ngaphandle kokudalula iziqinisekiso.
• Izinketho zembobo ebonakalayo: Ezinye izinhlelo zokusebenzisa zisusa abantu noma zivimbele amachweba; dala i-SKU elawulwayo esikhundleni sokushintsha komugqa we-ad-hoc.
• Izinkomba zokuqinisekisa: Ama-LED/izinkinobho zokuqinisekisa umsebenzisi zidinga ukuziphatha kwe-GPIO okuqinisekile.

Ukunikezwa Okuphephile Kudinga Isiteshi Esihlukile Ku-Flashing Ye-Firmware Ejwayelekile

I-Firmware ingavame ukulayishwa kabusha, kodwa izinto zobunikazi ezihlukile akufanele ziphathwe njengesithombe esijwayelekile se-binary. Uma indawo yokugcina isebenzisa izitifiketi, okhiye bedivayisi noma ukucushwa okuqondene nekhasimende, ukukhiqizwa kufanele kuhlukanise uhlelo oluvamile ekufakweni kobunikazi.

Lokhu kuhlukaniswa kuthuthukisa ukululama kokuhluleka: ibhodi elihlulekayo ukusebenza kukagesi i-FCT lingalungiswa ngaphambi kokusebenzisa noma ukuveza iziqinisekiso zamakhasimende zokugcina.

Qinisekisa Ukuhlehliswa Kwe-Firmware Ngokumelene Nemvelo Yangempela Yomsingathi Ngaphambi Kokukhishwa Kwevolumu

Iklayenti elingenalutho linesofthiwe yendawo encane kuneklayenti elincane, kodwa izinguquko ze-firmware zisengathinta ukuxoxisana kwesibonisi, ukuqondisa kabusha kwe-USB, ukuqinisekiswa kanye nokuhambisana kweseshini ekude. Ngenxa yokuthi indawo yokugcina incike kumphathi noma kumthengisi woxhumano, isibuyekezo se-firmware kufanele sihlolwe kabusha uma kuqhathaniswa nengqalasizinda yangempela esekelwayo.

• Ukusungulwa kweseshini: Hlola ukungena ngemvume, ukutholakala komthengisi kanye nokuxhuma kabusha ngemva kokuphazamiseka kwesixhumanisi.
• Izindlela zokubonisa: Qinisekisa yonke inhlanganisela yokubalwa/yokulungiswa kwemonitha esekelwayo, ikakhulukazi ngemva kokushintsha kwe-firmware noma i-display-PHY.
• Inqubomgomo ye-USB: Hlola kabusha amakilasi edivayisi avunyelwe navinjiwe, abafundi bekhadi elihlakaniphile/i-OTP kanye nokuziphatha kwe-hot-plug.
• Audio: Qinisekisa izindlela zemakrofoni/ama-headset uma ukusetshenziswa kusebenzisa ukubambisana noma izwi.
• Ukucushwa kokuphepha: Qinisekisa ukuthi izitifiketi, izilungiselelo zokubethela kanye nezinketho zokuqinisekisa zihlala zinjalo ngemva kokubuyekezwa.
• I-Rollback: Qinisekisa indlela yokutakula evunyiwe yomthwalo we-firmware ohlulekile noma ongahambisani.

Ekukhiqizeni, umphumela uwumthetho olula: ukubuyekezwa ngakunye kwehadiwe kufanele kube nenguqulo ye-firmware evunyelwe noma ububanzi benguqulo. Ifektri akufanele ilayishe isithombe "sakamuva" ngaphandle kokuthi i-OEM isisiqinisekisile kakade nendawo yokusingatha.

Idatha ye-RFQ yokukhiqizwa kwe-PCB ye-Zero Client Terminal

I-Highleap ingakhiqiza ama-PCBA e-endpoint aklanyelwe amakhasimende akhiwe ngokwenziwa kwezingqimba eziningi, ukuhlanganiswa kwe-SMT/through-hole, uhlelo, ukwenziwa kwe-serialization kanye nokuhlolwa kokusebenza. I-RFQ kufanele yenze ipulatifomu yephrothokholi kanye nobubanzi bokuhlinzeka bucace.

• Platform: i-processor/protocol silicon ezinikele, inkumbulo, i-flash kanye nemikhawulo yokuklama izinkomba evunyiwe.
• I / O: Isivinini se-Ethernet, inani/amamodi okubonisa, amachweba e-USB, umsindo kanye nezinto zokuqinisekisa ezingakhethwa.
• I-PCB/yemishini: ukuhlanganiswa, ukuvimba, idatha yesixhumi, indawo ebiyelwe kanye ne-interface yokushisa engenafeni.
• I-Firmware: isithombe esikhishwe, i-matrix yokuhambisana kwehadiwe, okuzenzakalelayo kanye nendlela yokubuyekeza.
• Ubunikazi: Ukwabiwa kwe-MAC/serial, izitifiketi/izihluthulelo kanye nemithetho yokuphatha evikelekile.
• FCT: Ithrafikhi ye-Ethernet, amasinki okubonisa, izinto ze-USB/zomsindo kanye nokuhlolwa kweseshini elawulwayo okukhethwa kukho.