Konzani mawonekedwe a siginecha mu ma PCB osanjikiza 12 kuti muchepetse kufalikira

Kuthetsa Mavuto a Njira ndi Kulumikizana kwa Interlayer mu Mabodi Ozungulira Osanjikiza 12 Kuti Mukwaniritse Ubwino Wama Signal ndi Kuchepetsa Crosstalk

Tsegulani:

Kupita patsogolo kofulumira kwaukadaulo kwadzetsa kufunikira kwa zida zamagetsi zovuta, zomwe zidapangitsa kugwiritsa ntchito ma board amitundu yambiri.Ma board awa ali ndi magawo angapo amayendedwe oyendetsa, omwe amapereka njira yolumikizirana komanso yothandiza pamakina apakompyuta.Komabe, pamene zovuta za matabwawa zikuwonjezeka, zovuta zosiyanasiyana zimabuka, monga njira zolumikizirana komanso zolumikizirana.Mubulogu iyi, tilowa m'malo ovuta kuthana ndi zovutazi m'mabwalo ozungulira 12-wosanjikiza kuti tikwaniritse mawonekedwe otsika komanso mawonekedwe apamwamba.Ndiye tiyeni tilowe!

Kumvetsetsa zovuta za cabling:

Kuyika koyenera ndikofunikira kuti zitsimikizire kufalikira kwa ma siginecha komanso kuchepetsa kusokoneza.Mu bolodi lozungulira la magawo 12, mawonekedwe owoneka bwino amawonjezera zovuta za njira yolowera.Nazi njira zazikulu zothanirana ndi vutoli:

1. Ikani zigawo mosamala:

Kuyika zinthu moyenera kumathandizira kwambiri pakuwongolera njira.Pokonza zigawo m'njira yomveka, tikhoza kuchepetsa kutalika kwa waya ndikuchepetsa mwayi wa crosstalk.Yang'anani pakuchepetsa mtunda pakati pa zigawo zofunika kwambiri kuti muwonetsetse kuyenda bwino kwa chizindikiro.

2. Gwiritsani ntchito mzere wa chizindikiro mwanzeru:

Kugawa magawo azizindikiro mwanzeru kumathandiza kuti ma sigino akhale odalirika.Kusokoneza kungathe kuchepetsedwa poika zizindikiro zofanana pamodzi m'magulu oyandikana ndikupereka mipata yokwanira pakati pa zizindikiro zomveka bwino.Kuphatikiza apo, kugwiritsa ntchito ndege zapansi ndi mphamvu pagulu lonse kumathandizira kuwongolera kusokoneza kwamagetsi (EMI) ndikuchepetsa kusinthasintha kwamagetsi.

3. Kusintha kwa siginecha:

Kuwongolera ma sign mosamalitsa ndikofunikira kuti mupewe crosstalk.Gwiritsani ntchito mapeyala osiyanitsira kapena zowongolera zowongolera pama siginecha apamwamba kwambiri.Kugwiritsa ntchito njira zodzitchinjiriza, monga kuphatikizira ndege zapansi pakati pa zigawo zazizindikiro, zitha kuperekanso chitetezo chowonjezera pakuphatikizana ndi phokoso lambiri.

4. Kukhulupirika kwa chizindikiro ndi malamulo apangidwe:

Kutsatira kukhulupirika kwa chizindikiro ndi malamulo apangidwe ndikofunikira kuti tipeze mawonekedwe abwino kwambiri.Chitani kuwerengera kokwanira kwa impedance poganizira mawonekedwe a gawo lapansi ndi zopinga zamapangidwe.Onetsetsani kuyimitsa koyenera ndi kufananitsa koletsa kuti mupewe zowunikira komanso kuwonongeka kwa data.

Konzani vuto la kulumikizana kwapakati:

Kuphatikiza pazovuta zamanjira, kuwonetsetsa kuti kulumikizana kwapakati ndikofunikira kwambiri pakukhathamiritsa kwamasigino.Tiyeni tiwone njira zina zothetsera vuto la kulumikizana kwapakati:

1. Kudzera m'malo:

Mwanjira pabwino vias atsogolere imayenera chizindikiro kuyenda pakati zigawo.Kuyika ma vias pafupi ndi gwero lazizindikiro ndi kopita kumachepetsa kuthekera kwa crosstalk ndi kuwonongeka kwa ma sign.Maulendo akhungu kapena okwiriridwa amawonjezera kukhulupirika kwa ma siginecha polola kulumikizana ndi zigawo zina popanda kulowa gulu lonse.

2. Chepetsani kudzera pa stubs:

Kudzera pa ma stubs kungayambitse kuchepa kwa ma sign, makamaka pama frequency apamwamba.Pochepetsa kutalika kwa ma stubs, titha kuchepetsa kuwunikira ndi kutayika kwa ma sign.Njira zosiyanasiyana monga kubweza m'mbuyo ndi microdrilling zingathandize kuthetsa kapena kuchepetsa kutalika kwa stub.

3. Njira zowongolera zolepheretsa:

Kukwaniritsa kuwongolera koyendetsedwa pakati pa zigawo zosiyanasiyana ndikofunikira kuti musunge kukhulupirika kwazizindikiro.Kuwerengera mozama kwa impedance ndikutsata mosamalitsa njira zimatsimikizira kusasinthika kwamtundu wa interlayer, kuchepetsa kupotoza kwa ma sign.

4. Zomangamanga:

Kuganizira mozama za mapangidwe a stack-up kungachepetse zovuta zolumikizana ndi magulu osiyanasiyana.Sankhani symmetrical stackup pogwiritsa ntchito prepreg layers kapena symmetrically positioned dielectric layers.Ndi kugawa kwazinthu moyenera, chizindikiro chilichonse chodutsa mugawo lililonse chidzakhala ndi mikhalidwe yofananira, kuwonetsetsa kuti siginecha yokhazikika pagulu lonselo.

Pomaliza:

Kukula kofunikira kwa zida zamagetsi zamagetsi zogwira ntchito kwambiri kumafuna kugwiritsa ntchito ma board ozungulira amitundu yambiri komanso ovuta.Komabe, kuthetsa zovuta zamalumikizidwe amayendedwe ndi ma inter-layer m'ma board ovutawa ndikofunikira kwambiri kuti mukwaniritse kutsika kwapang'onopang'ono komanso mawonekedwe apamwamba azizindikiro.Mwa kuyika mosamala zigawo, kugwiritsa ntchito moyenera zigawo za ma siginecha, kugwiritsa ntchito njira zoyendetsera bwino, ndikuganiziranso kulumikizana koyenera, titha kuthana ndi zovutazi ndikuwonetsetsa kuti tikugwira ntchito bwino kuchokera pama board a zigawo 12.Gwiritsani ntchito njirazi kuti mutengere kapangidwe kanu ka zamagetsi kuti mupambane bwino!