Ma ke kaʻina hana PCB design, because the plane segmentation, may lead to a reference plane of discontinuous signal, for low frequency signal, may have nothing to do, in the high frequency digital systems, high frequency signal to the reference plane for return path, namely the flow path, if the reference ᒣ surface discontinuity, signal across the break up, this will bring many problems, E like me EMI, crosstalk a me nā pilikia ʻē aʻe. I kēia hihia, pono e humuhumu ʻia ka mahele e hāʻawi i kahi ala hoʻi hope pōkole no ka hōʻailona. ʻO nā hana hana maʻamau me ka hoʻohui ʻana i ka capacitance humuhumu a me ke alahaka:

A. Stacing Capacitor˖

Usually, a 0402 or 0603 ceramic capacitor is placed across the signal division, and the capacitance of the capacitor is 0.01uF or 0.1uF. If the space allows, several more like capacitors ˗ can be added. Meanwhile, try to ensure that the signal line is within the sewing capacitance of 200mil. ʻO ka liʻiliʻi o ka mamao, ʻo ka ʻoi aku ka maikaʻi ˗ a ʻo nā pūnaewele ma nā ʻaoʻao ʻelua o ka capacitor e kūlike i nā pūnaewele o ka mokulele kūmole kahi e holo ai ka hōʻailona. E ʻike i nā pūnaewele i hoʻopili ʻia ma nā wēlau ʻelua o ka capacitor ma ke Kiʻi 1, a ʻo nā ʻokoʻa ʻelua i hōʻike ʻia i nā kala ʻelua.

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B. Alahaka ma ˖

ʻO ka maʻamau ka “packet ground packet ground processing” i ka papa hōʻailona ma waena o ka mahele, ʻo ia paha ka ʻeke o nā laina hōʻailona pūnaewele ʻē aʻe, ʻo kēia “ground packet” ka mānoanoa e hiki ai, kēia hana hana, e nānā i kēia kiʻi

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Eia kahi ʻōlelo hoʻohui o ka hanauna maʻamau o ka mahele keʻa ˖

1. ʻO ka mahele aʻe ˖ ma ka papa hoʻokahi, nui paha nā lako mana e hana, a me ka helu o nā lako mana ma lalo o ka helu palena; Ma hope o ka noʻonoʻo ākea, pono mākou e hana ma ka mokulele uila. I kekahi manawa hoʻomaʻemaʻe a maʻemaʻe hoʻi ia ˗ a i kekahi manawa ʻaʻole hiki ke pale i kahi pilina lohi, a kaumaha paha i kahi hōʻailona hōʻemi iki, akā pono ia e hoʻoponopono. ʻO kēia manaʻo e like me ka hele ʻana i ka home, ʻeli koke kahi auwai, he pilikia kēia, a puni ia, kahi mamao iki, alualu ʻia paha e kahi ʻīlio a kekahi; pono,

E kūkulu maʻalahi i kahi alahaka, a i ʻole hiki iā ʻoe ke hoʻi i ka home.

No laila, ʻokoʻa i ka hoʻohālikelike hihiu, inā ʻoe e hana i ka pā i kahi PCB, a laila

E hōʻoia i ka laina hōʻailona, ​​a i ʻole kekahi mea e hiki ke hana.

2. ʻAʻole maʻalahi ke kūlana ma luna aʻe e kāpae wale, a aia kekahi hanana e ʻike ʻole ʻia. Inā ʻoi loa ka VIA, e alakaʻi ana i ka ʻoki ʻana o ka mokulele, ma hope o nā mea āpau, ua noho ʻia e ka lewa, e hāʻawi hou aʻe i nā mea aʻe e noho ai, e hopena ana i ka ʻoki ʻana, ʻaʻole wehewehe ʻia kēia kūlana ma aneʻi, ka pili. hoʻolauna mea hou aku. I kēia hihia, pono ʻoe e hoʻonohonoho i nā lula maikaʻi i ka wā mua a nānā pono iā lākou i ka wā ma hope.

Clock, reset, hōʻailona ma luna o 100M a ʻaʻole hiki ke hoʻokaʻawale ʻia kekahi mau hōʻailona kaʻa kī. Aia ma ka liʻiliʻi he hoʻokahi mokulele piha, ʻoi aku ka maikaʻi o ka mokulele GND.

Hōʻailona uaki, hōʻailona wikiwiki a me nā hōʻailona koʻikoʻi e pāpā i ka hoʻokaʻawale kea;

Pono e kaulike ʻia nā hōʻailona ʻokoʻa i ka honua e pale i ka hoʻokaʻawale ʻana i ka laina hoʻokahi. (Vertical cross segmentation a hiki i ka hiki)

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Aia ke ala hoʻi pinepine pinepine o nā hōʻailona āpau ma lalo pono o ka laina hōʻailona o ka papa e pili ana. Hiki ke hōʻemi nui ʻia nā pilikia a me nā pilikia manawa ma ke kau ʻana i kahi papa paʻa ma lalo o ka hōʻailona e hāʻawi ana i kahi loop loop no ka hōʻailona. Pono e hoʻohana i kahi capacitor kaapuni 0.01uF ke hiki ʻole ke hoʻokaʻawale a me ke keʻa ma waena o nā uea a me ka papa. Ke hoʻohana ʻia nā capacitors loop, e hoʻokau ʻia lākou i kahi kokoke e hiki ai i ke kikowaena o ka laina hōʻailona a me ka paku o ka papa.