Maitiro Ekubudirira Prototype Yepamusoro-Speed ​​​​Datacom PCB

suma:

Prototyping a printed circuit board (PCB) ine high-speed data communications kugona kunogona kuva basa rakaoma. Nekudaro, nenzira kwayo uye neruzivo, inogona zvakare kuve chiitiko chinonakidza uye chine mubairo.Mune ino blog positi, isu tichaongorora nhanho-ne-nhanho maitiro ekuita prototyping PCB inogona kunyatso kubata yakakwirira-kumhanya data kutaurirana.

Dzidza nezvezvinodiwa:

Danho rekutanga mu prototyping PCB ine high-speed data communications ndeyekunyatsonzwisisa zvinodiwa. Funga zvinhu zvakaita seyero inodiwa yekuchinjisa data, maprotocol uye zviyero zvichashandiswa, uye ruzha uye kukanganisa dunhu rinoda kumira. Iyi nzwisiso yekutanga ichakutungamira mukuita.

Sarudza zvikamu zvakakodzera:

Kuve nechokwadi chepamusoro-kumhanyisa data kutaurirana, zvakakosha kuti usarudze iwo chaiwo zvikamu zvePCB. Tarisa ma components ane high frequency response uye low jitter. Izvo zvakakosha kuti utarise dhetabheti uye zvakatemwa nekungwarira kuti uone kuti zvinozadzisa zvaunoda. Uyezve, funga kushandisa zvidimbu zvepamberi senge-high-speed transceivers kana serializers/deserializers (SerDes) kuti uvandudze kushanda.

Dhizaini PCB dhizaini:

PCB dhizaini inoita basa rakakosha mukuwana yakanyanya-kumhanyisa data kutaurirana. Teerera kune chiratidzo chekuvimbika, kureba kuenzanirana uye impedance control. Shandisa matekiniki akadai sekusiyanisa kusaina, mitsetse yemitsara, uye kudzivirira mabhendekete akapinza kuderedza kukanganiswa kwechiratidzo uye crosstalk. Pamusoro pezvo, funga kushandisa pasi uye ndege dzemagetsi kusimudzira kuita kwese uye kuderedza kukanganiswa kwemagetsi (EMI).

Simulation uye Analysis Dhizaini:

Usati waenderera mberi nekusimudzira prototype, dhizaini inofanirwa kutevedzerwa uye kuongororwa. Shandisa maturusi esoftware akadai seSPICE (Program for Integrated Circuit Emphasis Simulation) kana electromagnetic simulator kuratidza kushanda kwedhizaini yako. Tarisa chero zvingangoitika zvakaita sechiratidzo chechiratidzo, kutyora nguva, kana ruzha rwakanyanya. Kuita zvigadziriso zvinodikanwa panguva yekugadzira chikamu kunochengetedza nguva uye kuderedza njodzi yekutadza panguva yeprototyping process.

Kugadzira PCB prototypes:

Kana dhizaini yapedzwa uye nekusimbiswa kuburikidza nekuenzanisa, iyo PCB prototype inogona kugadzirwa. Dhizaini mafaera anogona kutumirwa kuPCB inogadzira kambani, kana, kana uine zviwanikwa zvinodiwa, unogona kufunga kugadzira maPCB mumba. Ita shuwa kuti yakasarudzwa yekugadzira nzira inosangana nepamusoro-kumhanya zvinodiwa, senge inodzorwa impedance yekugadzira maitiro uye zvemhando yepamusoro zvinhu.

Kuunganidza prototype:

Kana iwe uchinge wagamuchira yakapedzwa PCB prototype, unogona kuunganidza zvikamu. Nekuchenjera tengesa chikamu chimwe nechimwe kuPCB, uchinyatso tarisisa kune inotaridzika-yepamusoro-inomhanya chiratidzo cheki. Shandisa nzira dzakakodzera dzekutengesa uye ona kuti majoini ako ekutengesa akachena uye akavimbika. Kutevera indasitiri maitiro akanakisa uye zviyero zvichabatsira kudzivirira zvinogona kuitika senge solder mabhiriji kana yakavhurika kubatana.

Edza uye simbisa prototypes:

Kana iyo PCB prototype yaunganidzwa, inoda kunyatsoongororwa uye kusimbiswa. Shandisa midziyo yekuyedza yakakodzera, senge oscilloscope kana network analyzer, kuti uongorore kuita kwekutaurirana kwedata. Edza mamiriro akasiyana-siyana, anosanganisira akasiyana data data, mitoro inosiyana uye inotapukirwa neruzha masosi, kuve nechokwadi chekuti PCB inosangana nezvinodiwa. Nyora chero nyaya kana zvisingakwanisi kuwanikwa panguva yekuyedzwa kuitira kuti imwe gadziriso iitwe kana zvichidikanwa.

Dzokorora uye natsa dhizaini:

Prototyping iterative maitiro, uye zvinonetsa kana nzvimbo dzekuvandudza dzinowanzo kusangana panguva yekuyedza chikamu. Ongorora mhinduro dzebvunzo, tsvaga nzvimbo dzekuvandudza, uye ita shanduko yedhizaini zvinoenderana. Rangarira kufunga kuvimbika kwechiratidzo, kudzvinyirira kweEMI, uye kugona kugadzira paunenge uchigadzirisa. Dzokorora dhizaini uye bvunzo nhanho sezvinodiwa kudzamara yaidiwa yakakwirira-yekumhanyisa data yekutaurirana kuita kwaitwa.

Mukupedzisa:

Prototyping a PCB ine high-speed data kutaurirana kunoda kunyatsoronga, kutarisisa kune zvakadzama, uye kuomerera kune zvakanakisa maitiro. Nekunzwisisa zvinodikanwa, kusarudza izvo zvakanaka zvikamu, kugadzira yakagadziridzwa dhizaini, kutevedzera uye kuongorora dhizaini, kugadzira iyo PCB, kuiunganidza nemazvo, uye kunyatso kuyedza uye kudzokorora pane prototypes, unogona kubudirira kugadzira yakakwirira-inoshanda maPCB ekuita kwepamusoro. High-speed data kutaurirana. Ramba uchinatsa dhizaini uye gara uchigadziridzwa neazvino matekinoroji uye zviyero kuti ugare pamberi peiyo curve mundima iyi inogara ichishanduka.