Hauv txheej txheem tsim ntawm high-speed PCB, kev txuas xov tooj yog qhov txuj ci tshaj plaws thiab txwv tsis pub tshaj, cov kws tsim khoom feem ntau ntsib teeb meem ntau yam hauv cov txheej txheem no. Kab lus no yuav xub ua thawj qhov taw qhia rau PCB, thiab tib lub sijhawm ua cov lus piav qhia yooj yim ntawm txoj cai ntawm thaiv, thaum kawg yuav coj tau zoo heev plaub PCB thaiv kev txawj thiab qhov tseem ceeb.

Here are some good wiring tips and essentials:

Ua ntej tshaj plaws, tau qhia ua ntej. Tus naj npawb ntawm PCB txheej tuaj yeem faib ua ib txheej, ob txheej thiab ntau txheej. Ib txheej tsuas yog tshem tawm tam sim no. Ob chav lawj board dab tsi lub suab siv tam sim no yog ntau heev, nws yog los txiav txim siab qhov tshwm sim raws li feem ntau muab ntxhib qauv pawg thawj coj saib menyuam, ntau txheej txheej pawg lus taw tes rau 4 mus txog lub rooj tsavxwm ntawm 4 saum toj no uas yog, mus rau qhov xav tau ntom ntom ntom ntom ntom tsis siab qhia 4 txheej yog txaus txaus. Los ntawm Lub Ntsej Muag los ntawm lub qhov tuaj yeem muab faib ua los ntawm qhov, qhov muag tsis pom, thiab faus qhov. A through-hole is a hole that goes directly from the top to the bottom; Qhov qhov muag tsis pom tau hnav los ntawm sab saud lossis hauv qab mus rau txheej txheej nruab nrab, thiab tom qab ntawd nws tsis txuas ntxiv. Qhov kom zoo dua no yog tias txoj haujlwm ntawm lub qhov tsis raug thaiv txij thaum pib mus txog qhov kawg, thiab lwm txheej tseem tuaj yeem taug kev ntawm txoj haujlwm ntawm lub qhov. The buried hole is this hole that goes through the mesosphere to the mesosphere, is buried, the surface is completely invisible. Qhov xwm txheej tshwj xeeb tau qhia hauv daim duab hauv qab no.

Ua ntej thaiv kab thaiv tsis siv neeg, thaiv nrog cov kev xav tau siab ntawm kab sib tham ua ntej, kev tawm tswv yim thiab tso tawm kab sab yuav tsum tsis txhob nyob ib sab ua ke, kom tsis txhob cuam tshuam kev cuam tshuam. Yog tias tsim nyog, cov kab hluav taws xob hauv av tuaj yeem siv rau kev sib cais, thiab cov hlua ntawm ob txheej uas nyob ib sab yuav tsum tau muab sib dhos ib leeg, vim tias txheej txheej zoo li yuav ua rau muaj kab mob sib kis. Kev faib tawm ntawm cov xov hluav taws xob tsis siv neeg nyob ntawm qhov teeb tsa zoo, txoj cai thaiv tuaj yeem teeb tsa ua ntej, xws li tus lej ntawm txoj kab dabtsi yog khoov, tus lej dhau ntawm qhov, tus lej ntawm cov kauj ruam, thiab lwm yam. It is to undertake exploration type wiring first commonly, connect short line quickly, pass maze type wiring again, the connection that wants cloth undertakes global wiring route optimization, it can disconnect the line that already cloth according to need and try to re – route again, improve overall wiring effect thereby.

Txog kev teeb tsa, ib txoj cai yog khaws digital thiab analog sib cais raws li ua tau, thiab ib txoj cai yog kom ceev ceev kom deb ntawm kev kub ceev. Lub hauv paus ntsiab lus yooj yim tshaj plaws yog cais cov hauv paus digital thiab kev sib piv hauv av. Cov av hauv av yog cov cuab yeej hloov pauv, thiab tam sim no loj heev thaum lub sijhawm hloov, thiab me me heev thaum nws tsis txav mus. Yog li ntawd, cov av hauv av tsis tuaj yeem sib xyaw nrog kev sib piv hauv av. Cov txheej txheem pom zoo tuaj yeem zoo li qhov hauv qab no.

1. Ceev faj txog kev thaiv cov hlua hluav taws xob thiab cov xaim av

(1) Txhawm rau ntxiv kev txiav tawm lub zog ntawm lub zog hluav taws xob thiab hauv av xaim. Nco ntsoov txuas lub zog xa mus rau tus pin ntawm lub nti tom qab txiav lub capacitor, cov duab hauv qab no teev ob peb txoj hauv kev txuas tsis raug thiab txoj hauv kev txuas raug, peb xa mus rau tom ntej, puas muaj qhov yuam kev no? Decoupling capacitor generally has two functions: one is to provide the chip with instantaneous large current, and the other is to remove the power supply noise. On the one hand, the noise of the power supply should be minimized to affect the chip, and on the other hand, the noise generated by the chip should not affect the power supply.

(2) kom deb li deb tau kom nthuav dav lub zog siv hluav taws xob thiab cov xaim hauv av, cov xov hlau hauv av zoo tshaj plaws yog dav dua li cov kab hluav taws xob, nws txoj kev sib raug zoo yog: hauv av xaim “kab hluav taws xob” teeb liab kab.

(3) tuaj yeem siv thaj tsam loj ntawm txheej tooj liab ua av, hauv daim ntawv luam tawm tsis siv hauv qhov chaw txuas nrog hauv av, siv hauv av, lossis ua ntau txheej, muab hluav taws xob, hauv av txhua qhov nyob ib txheej.

2. Digital Circuit thiab analog circuit mixing ua

Niaj hnub no, ntau lub PCBS tsis muaj kev ua haujlwm ib leeg ntxiv lawm, tab sis tau tsim los ntawm kev sib xyaw ntawm cov xov tooj cua thiab analog, yog li kev cuam tshuam ntawm lawv yuav tsum tau txiav txim siab thaum siv, tshwj xeeb yog kev cuam tshuam suab nrov hauv av.

Vim tias muaj cov kab hluav taws xob digital ntau zaus, cov khoom siv hluav taws xob zoo sib xws muaj zog, rau cov kab teeb liab, cov teeb liab ntau kom deb li deb tau ntawm cov cuab yeej siv hluav taws xob zoo sib xws, tab sis rau tag nrho PCB, PCB hauv av xaim mus rau lub ntiaj teb sab nraud tuaj yeem muaj ib qho nkaus xwb. , yog li yuav tsum yog nyob rau hauv PCB kev ua haujlwm, digital Circuit thiab cov teeb meem sib piv hauv Circuit Court, thiab hauv Circuit Court board, Hauv av ntawm cov xov tooj digital thiab hauv av ntawm qhov sib piv sib piv tau sib cais tiag tiag, tsuas yog nyob ntawm lub interface (ntsaws, thiab lwm yam) qhov twg PCB txuas nrog rau ntiaj teb sab nraud. Hauv av ntawm cov xov tooj digital yog luv me ntsis hauv av ntawm qhov sib piv sib piv, thov nco ntsoov tias tsuas muaj ib qho kev sib txuas xwb, tseem muaj qhov tsis txaus ntseeg hauv PCB, qhov no nyob ntawm qhov tsim qauv.

3. Ua cov kab kaum

Feem ntau yuav muaj kev hloov pauv tuab ntawm lub ces kaum ntawm txoj kab, tab sis thaum txoj kab kab nruab nrab hloov pauv, yuav muaj qee qhov kev xav tshwm sim. Txog kab kev hloov pauv tuab, kaum sab xis yog qhov phem tshaj, 45 degrees zoo dua, thiab cov ces kaum sib npaug yog qhov zoo tshaj. Txawm li cas los xij, cov ces kaum sib npaug yog teeb meem rau PCB tsim, yog li nws feem ntau txiav txim siab los ntawm qhov nkag siab ntawm lub teeb liab. Feem ntau, 45 degree Lub kaum ntse ntse txaus rau lub teeb liab, thiab tsuas yog cov kab uas nkag siab heev xav tau cov ces kaum sib npaug.

4. Check the design rules after laying the line

Txawm peb ua dab tsi, peb yuav tsum txheeb xyuas nws tom qab peb ua tiav, ib yam li peb yuav tsum tshuaj xyuas peb cov lus teb yog tias peb muaj sijhawm nyob hauv qhov kev xeem, uas yog txoj hauv kev tseem ceeb rau peb kom tau txais cov qhab nia siab, thiab nws zoo ib yam rau peb los kos PCB cov laug cam. Ua li no, peb tuaj yeem ntseeg tau ntau ntxiv tias cov laug cam uas peb kos yog cov khoom tsim nyog. Peb kev tshuaj xyuas dav dav muaj cov hauv qab no:

(1) seb qhov kev ncua deb ntawm kab thiab kab, kab thiab kab ntawv tivthaiv, kab thiab dhau los-qhov, tivthaiv ncoo thiab dhau-lub qhov, dhau-lub qhov thiab hla-lub qhov yog qhov tsim nyog, txawm tias ua tau raws li qhov yuav tsum tau ua.

(2) Txawm hais tias qhov dav ntawm txoj hlua hluav taws xob thiab cov xov hluav taws xob hauv av puas tsim nyog, seb lub zog hluav taws xob thiab cov xov hluav taws xob hauv av tau sib txuas ua ke (tsis tshua muaj kev cuam tshuam nthwv dej), thiab seb puas muaj chav nyob hauv PCB rau hauv av cable kom nthuav dav.

(3) Txawm hais tias qhov ntsuas zoo tshaj plaws tau ua rau cov kab cim tseem ceeb, xws li qhov ntev tshaj plaws, kab tiv thaiv, kab nkag thiab kab tso tawm tau sib cais meej.

(4) Kev sib piv ntawm Circuit thiab digital Circuit ib feem, seb puas muaj kev ywj pheej hauv av hlau.

(5) Txawm hais tias cov duab (xws li ICONS thiab cov cim) ntxiv rau PCB yuav ua rau teeb liab luv Circuit Court.

(6) Hloov kho qee kab uas tsis txaus siab.

(7) Txawm hais tias cov txheej txheem kab tau ntxiv rau ntawm PCB, txawm tias qhov vuam tsis kam ua tau raws li qhov xav tau ntawm cov txheej txheem tsim khoom, seb qhov kev tiv thaiv vuam me me puas tsim nyog, thiab seb lub cim cim raug nias ntawm lub vuam ncoo ntawm lub cuab yeej, yog li tsis txhob cuam tshuam qhov khoom siv hluav taws xob zoo.

(8) Txawm hais tias txheej txheej sab nrauv ntawm txheej txheej txheej fais fab hauv cov txheej txheem txheej txheej tau raug txo qis, xws li cov ntawv ci tooj liab tau nthuav tawm sab nraud ntawm pawg thawj coj ntawm txheej txheej fais fab tau yooj yim ua rau luv Circuit Court.

Txhua yam, cov txuj ci thiab cov hau kev saum toj no yog kev paub, uas tsim nyog kawm thaum peb kos PCB pawg thawj coj. Hauv cov txheej txheem ntawm kev kos duab PCB, ntxiv rau kev txawj siv cov cuab yeej kos duab, peb kuj yuav tsum muaj kev paub theoretical thiab kev paub dhau los, uas tuaj yeem pab koj ua tiav koj daim ntawv qhia PCB sai thiab muaj txiaj ntsig. Tab sis kuj tseem muaj lub ntsiab lus tseem ceeb heev, uas yog, peb yuav tsum tau ceev faj, tsis hais teeb meem xov hlau lossis txheej txheem txheej txheem txhua kauj ruam yuav tsum tau ua tib zoo saib xyuas thiab hnyav, vim tias koj qhov yuam kev me me tuaj yeem ua rau koj cov khoom kawg ua pov tseg, thiab tom qab ntawd tsis tuaj yeem pom qhov twg tsis yog lawm, Yog li peb xav siv sijhawm ntau dua ntawm cov txheej txheem kos duab kom ua tib zoo txheeb xyuas cov ntaub ntawv dua li rov qab mus thiab txheeb xyuas yog tias muaj qee yam tsis raug, uas yuav siv sijhawm ntau dua. Hauv ntej, txheej txheem PCB them sai sai rau cov ntsiab lus.