2012

Serializer / Deserializer (SerDes) ni ihuriro ryimikorere ikunze gukoreshwa mumatumanaho yihuta kugirango yishyure ibyinjijwe / bisohoka.Izi blokts zihindura amakuru hagati yuruhererekane namakuru aringaniye muri buri cyerekezo.Ijambo "SerDes" muri rusange ryerekeza ku ntera ikoreshwa mu ikoranabuhanga ritandukanye.Ikoreshwa ryibanze rya SerDes nugutanga amakuru yoherejwe kumurongo umwe cyangwa aitandukaniromurwego rwo kugabanya umubare wa I / O pin hamwe.

Igikorwa cyibanze cya SerDes kigizwe nibice bibiri bikora: Iringaniza Muri Serial Hanze (PISO) (bita Parallel-to-Serial ihindura) hamwe na Serial In Parallel Out (SIPO) (bita Serial-to-Parallel ihindura).Hano haribintu 4 bitandukanye bya SerDes:

PISO (Iyinjiza Iyinjiza, Ibisohoka Ibisohoka) isanzwe ifite isaha ibangikanye ninjiza, umurongo wimibare yinjiza, hamwe namakuru yatanzwe.Irashobora gukoresha imbere cyangwa hanzeicyiciro gifunzwe (PLL)kugwiza isaha ijyanye nisaha igera kumurongo ukurikirana.Imiterere yoroshye ya PISO ifite imweKwiyandikishayakira amakuru abangikanye rimwe kumasaha abangikanye, akayimura hanze kurwego rwo hejuru rwisaha.Gushyira mubikorwa birashobora no gukoresha akabirikwiyandikisha kugirango wirindemetastabilitymugihe wohereza amakuru hagati yisaha.

SIPO (Iyinjiza ryuruhererekane, Isohora Isohora) isanzwe ifite isaha yo kwakira amasaha, urutonde rwamakuru asohoka imirongo hamwe nibisohoka byamakuru.Isaha yo kwakira irashobora kuba yarakuwe mubyatanzwe na serialkugarura isahatekinike.Ariko, SerDes idatanga isaha ikoresha isaha yo gufunga kugirango ufunge PLL kumurongo wa Tx ukwiye, wirinda hasiguhuza imirongomuri inamakuru.Guhagarika SIPO noneho igabanya isaha yinjira kumanuka ugereranije.Gushyira mubikorwa mubisanzwe bifite rejisitiri ebyiri zahujwe nka buffer ebyiri.Igitabo kimwe gikoreshwa mu isaha mu ruhererekane, naho ikindi gikoreshwa mu gufata amakuru ku gahoro gahoro.

Ubwoko bumwe bwa SerDes burimo kodegisi / decoding.Intego yiyi kodegisi / decoding mubisanzwe ni ugushira byibuze imbibi zishingiye ku mibare ku gipimo cyo guhinduranya ibimenyetso kugirango byoroherekugarura isahamubakira, gutangagushushanya, no gutangaImpirimbanyi ya DC.