Eli phepha lichaza ngokufutshane indlela yokwenza iinkqubo PCB Uyilo lomgaqo-nkqubo wokujonga (iDRC). Nje ukuba uyilo lwe-PCB lufumaneke kusetyenziswa isixhobo sokuvelisa umzobo wesekethe, i-DRC inokuqhutywa ukuze ifumane nakuphi na ukusilela okuphula imithetho yoyilo lwe-PCB. Oku kufuneka kwenziwe ngaphambi kokuqala kokuqhubekeka, kwaye umphuhlisi womvelisi wesekethe kufuneka abonelele ngezixhobo zeDRC uninzi lwabaqulunqi bePCB ezinokuthi zibe nazo ngokulula.

Zininzi izibonelelo zokubhala eyakho i-PCB yoyilo lokujonga umthetho. Ngelixa i-PCB yoyilo lokujonga ayisiyonto ilula, ayinakulawuleka, kuba nawuphi na umyili wePCB oqhelene neenkqubo esele zikhona okanye iilwimi zokubhala zinokuyenza, kwaye izibonelelo azinakuthelekiswa nanto.

Nangona kunjalo, izixhobo zentengiso jikelele-zenjongo zihlala zingaguquguquki ngokwaneleyo ukuhlangabezana neemfuno ezithile zoyilo lwePCB. Ngenxa yoko, iimfuno zento entsha kufuneka zixelwe ngabathengi kubavelisi besixhobo seDRC, esihlala sithatha imali kunye nexesha, ngakumbi ukuba iimfuno zihlala zihlaziywa. Ngethamsanqa, uninzi lwabaphuhlisi banokunika abathengi babo indlela elula yokubhala eyabo iDRC yokuhlangabezana neemfuno zabo. Nangona kunjalo, esi sixhobo sinamandla asaziwa ngokubanzi okanye sisetyenziswe. Eli nqaku libonelela ngesikhokelo esisebenzayo sokufumana okuninzi kwizixhobo zeDRC.

Ukusukela iDRC kufuneka inqumle i-PCB ukuyila yonke idayagramu yesekethe, kubandakanya zonke iisimboli, zonke iipini, yonke inethiwekhi, uphawu ngalunye, kunye nokwenza inani elingenamda leefayile “zokufikelela” ukuba kukho imfuneko. Njengoko kuchaziwe kwiCandelo 4.0, iDRC inokufaka iflegi nakuphi na ukuphambuka okuncinci kwimigaqo yoyilo lwePCB. Umzekelo, enye yeefayile eziqhotyoshelweyo inokuba nazo zonke izixhobo zokucoca izixhobo ezisetyenzisiweyo kuyilo lwePCB. Ukuba inani le-capacitance liphantsi okanye liphezulu kunokuba bekulindelwe, amanqaku abomvu aya kubekwa apho iingxaki kumgca wamandla we-DV / DT zinokwenzeka khona. Ezi fayile zoncediso zinokuba yimfuneko, kodwa azenzeki ukuba zenziwe nasiphi na isixhobo seDRC sentengiso.

Uyila njani i-PCB rule checker DRC

Olunye uncedo lweDRC kukuba inokuhlaziywa ngokulula ukulungiselela izinto ezintsha zoyilo lwePCB, ezinjengezo zinokuchaphazela imigaqo yoyilo lwePCB. Ngaphaya koko, nje ukuba ufumane amava awaneleyo kuloo ndawo, zininzi ezinye izinto onokuzisebenzisa.

Umzekelo, ukuba ungabhala eyakho iDRC, ungabhala eyakho isixhobo sokwenza i-BOM ukujongana ngcono neemfuno ezithile zomsebenzisi, ezinje ngendlela yokufumana “izixhobo ezongezelelekileyo” (ezinje ngeziseko, iiradiyetha, okanye izikrufu) zezixhobo ezingezizo ngokwabo bayinxalenye yedatha yedayagramu yesekethe. Okanye umyili wePCB angabhala eyakhe iVerilog netlist analyzer ngokuguquguquka okwaneleyo kwimeko yoyilo lwePCB, enje ngendlela yokufumana iimodeli zeVerilog okanye iifayile zexesha ezifanelekileyo kwisixhobo esithile. Ngapha koko, ngenxa yokuba iDRC inqumla yonke idizayini yoyilo lwePCB, kunokwenzeka ukuba uqokelele lonke ulwazi olusebenzayo ukuze uphumeze ulinganiso kunye / okanye i-BOM efunekayo kuyilo lwe-PCB yoyilo lweVerilog.

Kuya kuba lula ukuxoxa ngezi zihloko ngaphandle kokubonelela ngekhowudi yenkqubo, ke siya kusebenzisa isixhobo sokufumana umzobo wesekethe njengomzekelo. Eli nqaku lisebenzisa inkampani yeMentor Graphics ukuphuhlisa isixhobo esijongwa kwi-ViewDraw esiqhotyoshelwe kumgca wemveliso yePADS-Designer. Ukongeza, sisebenzise isixhobo se-ViewBase, esenziwe lula ilayibrari yesiqhelo yeC enokubizwa ukuba ifikelele kwiziko ledatha le-ViewDraw. Ngesixhobo se-ViewBase, abaqulunqi be-PCB banokubhala ngokulula nangokugqibeleleyo izixhobo ze-DRC ze-ViewDraw kwi-C / C. Kubalulekile ukuba uqaphele ukuba imigaqo-siseko esisiseko exoxiweyo apha isebenza nakweyiphi na enye i-PCB schematic tool.

Ifayile yegalelo

Ukongeza kwidathabheyisi yedrafti yesekethe, iDRC ikwafuna iifayile zokufaka ezinokuchaza iimeko ezithile, ezinje ngegama lenethiwekhi yamandla esemthethweni eqhagamshelwe ngokuzenzekelayo kumoya wamandla. Umzekelo, ukuba inethiwekhi yamandla ibizwa NGAMANDLA, inqwelo-moya YAMANDLA iqhagamshele ngokuzenzekelayo kwi-POWER inqwelo-moya isebenzisa isixhobo sokuphelisa umva (njengoko sisebenza kwi-ViewDrawpcbfwd). Olu luhlu lulandelayo luluhlu lweefayile zokufaka ekufuneka zibekwe kwindawo esisigxina yehlabathi ukuze iDRC ifumane ngokuzenzekelayo kwaye ifunde, emva koko igcine olu lwazi ngaphakathi eDRC ngexesha lokusebenza.

Ezinye iisimboli kufuneka zibe nezikhonkwane zentambo yamandla angaphandle kuba azidibananga kumaleko wentambo yombane oqhelekileyo. Umzekelo, izikhonkwane ze-ECL zesixhobo se-VCC zinokudityaniswa kwi-VCC okanye kwi-GROUND; I-pin yayo ye-VEE inokudityaniswa kwi-GROUND okanye kwi -5.0V moya. Ukongeza, ipini yentambo yamandla inokuqhagamshelwa kwisihluzi ngaphambi kokufikelela kulungelelwaniso lwentambo.

Ipini yentambo yombane ayiqhelekanga iqhotyoshelwe kwisimboli yesixhobo. Endaweni yoko, ipropathi yesimboli (ebizwa ngokuba yi-SIGNAL apha) ichaza ukuba yeyiphi ipini ngamandla okanye ipini yomhlaba kwaye ichaza igama lenethiwekhi ekufuneka ipini iqhagamshelwe kuyo.

UMSEBENZI = VCC: 10

UMSEBENZI = UMHLABA: 20

I-DRC ingayifunda le propati kwaye iqinisekise ukuba igama lenethiwekhi ligcinwe kwifayile esemthethweni_pwr_net_name. Ukuba igama lenethiwekhi alifakwanga ngokusemthethweni_pwr_net_name, ipini yamandla ayizukuxhunywa kwinqwelomoya, yingxaki enkulu leyo.

Ifayile yomthetho_pwr_net_name Ukhetho. Le fayile iqulethe onke amagama enethiwekhi asemthethweni emiqondiso yamandla, njenge-VCC, V3_3P, kunye neVDD. Kwisakhiwo sePCB / izixhobo zendlela, amagama kufuneka abe nobuthathaka kwimeko. Ngokubanzi, i-VCC ayifani neVCC okanye iVCC. I-VCC inokuba ngumbane we-5.0V kwaye i-V3_3P ingaba yi-3.3V yokuhambisa umbane.

Ifayile esemthethweni_pwr_net_name ayinyanzelekanga, kuba isakhelo sokumisa isixhobo esingasemva sokucwangciswa kufuneka siqulathe iseti yamagama enethiwekhi asetyenziswayo. Ukuba iCadencePCB isetyenziselwa ukuyila isixhobo seAllegro yewiring, igama lefayile yePCBFWD nguAllegro.cfg kwaye ineeparameter zokungena ezilandelayo:

PHANTSI: VSS CGND GND PHANTSI

Ukunikezelwa kwamandla: VCC VDD VEE V3_3P V2_5P 5V 12V

Ukuba iDRC inokufunda ifayile ye-allegro.cfg ngqo endaweni yomthetho_pwr_net_name, iya kufumana iziphumo ezingcono (okt amathuba amancinci okwazisa iimpazamo).