litaba

Lisebelisoa tsa Ethernet, ha PHY chip e hokahane le RJ, hangata motlakase oa marang-rang o eketsoa.Thepa e bohareng ea li-transformer tsa marang-rang e thehiloe.Tse ling li hokahane le phepelo ea motlakase, 'me boleng ba phepelo ea matla bo ka fapana, ho kenyelletsa 3.3V, 2.5V, le 1.8V.Ebe u hokela pompo e bohareng joang (PHY end) ea transformer?

A. Ke hobane'ng ha tse ling tsa lipompo tse bohareng li hokahane le matla?Tse ling li theiloe fatše?

Sena se khethoa haholo-holo ke mofuta oa mokhanni oa koung ea UTP oa chip ea PHY e sebelisitsoeng.Mefuta ea likoloi e arotsoe ka: motlakase oa motlakase le koloi ea hona joale.Hokela phepelo ea motlakase ha u khanna ka voltage;hokela capacitor fatše ha u khanna ka hona joale.Ka hona, mokhoa oa ho hokahanya oa pompo ea bohareng o amana haufi-ufi le mofuta oa UTP port drive ea PHY chip.Ka nako e ts'oanang, ka kopo sheba database le moralo oa litšupiso oa chip.

Tlhokomeliso: Haeba pompo e bohareng e hokahane ka phoso, boema-kepe ba marang-rang bo tla tsitsa kapa bo thijoe.

Lisebelisoa tsa Ethernet, ha PHY chip e hokahane le RJ, hangata motlakase oa marang-rang o eketsoa.Thepa e bohareng ea li-transformer tsa marang-rang e thehiloe.Tse ling li hokahane le phepelo ea motlakase, 'me boleng ba phepelo ea matla bo ka fapana, ho kenyelletsa 3.3V, 2.5V, le 1.8V.Ebe u hokela pompo e bohareng joang (PHY end) ea transformer?

B. Ke hobane'ng ha e hokahane le motlakase o fapaneng ha o hokahane le motlakase?

Sena se boetse se khethoa ke boemo ba boema-kepe ba UTP bo boletsoeng ho data ea chip ea PHY e sebelisitsoeng.Boemo bo tlameha ho hokahanngoa le motlakase o lumellanang, ke hore, haeba e le 1.8v, e tla huloa ho fihlela ho 1.8v, haeba e le 3.3v, e tla huloa ho fihlela ho 3.3v.

Karolo ea pompo ea bohareng ea LAN transformer:

1. Fokotsa mokhoa o tloaelehileng oa hona joale le oa mokhoa o tloaelehileng oa motlakase holim'a mohala ka ho fana ka tsela e tlaase ea ho khutla ea impedance bakeng sa lerata le tloaelehileng la mokhoa o tloaelehileng moleng oa phapang;

2. Bakeng sa li-transceivers tse ling, fana ka motlakase oa DC bias kapa mohloli oa matla.

Ho hatelloa ha mokhoa o tloaelehileng oa RJ ho ka ba molemo, 'me li-parasite tsa parasitic le tsona ha li amehe haholo;ka hona, le hoja theko e batla e phahame, e boetse e tumme haholo ka lebaka la ho kopanngoa ha eona ho phahameng, sebaka se senyenyane, khatello ea mokhoa o tloaelehileng, parasitic parameters le melemo e meng.amohela.

Mosebetsi oa network transformer ke ofe?Na ha u khone ho e thonaka?

Ho bua ka theory, e ka sebetsa ka mokhoa o tloaelehileng ntle le ho hokahanya mochine oa motlakase oa marang-rang le ho hokahanya ka ho toba le RJ.Leha ho le joalo, sebaka sa phetisetso se tla fokotsoa, ​​'me se tla ameha hape ha se hokahane le koung ea marang-rang ea boemo bo fapaneng.'Me tšitiso ea kantle ho chip e boetse e ntle.Ha motlakase oa marang-rang o hokahane, o sebelisoa haholo-holo bakeng sa ho kopanya boemo ba pontšo.1. Matlafatsa lets'oao ho etsa sebaka sa phetiso hole;2. Arola pheletso ea chip ho tloha ka ntle, ho ntlafatsa bokhoni ba ho thibela ho kena-kenana le ho eketsa tšireletso ea chip (e kang ho otla ha lehalima);3. Ha e hokahantsoe le maemo a fapaneng (joalo ka lichipisi tse ling tsa PHY ke 2.5V, 'me tse ling tsa PHY chips ke 3.3V), e ke ke ea ama lisebelisoa tsa tse ling.
Ka kakaretso, sesebelisoa sa marang-rang se na le mesebetsi ea phetiso ea mats'oao, ho ts'oarana ha impedance, tokiso ea waveform, khatello ea lets'oao le ho itšehla thajana.