DS90UB953TRHBRQ1 ( Zamagetsi Zamagetsi IC Chips Integrated Circuits IC ) DS90UB953TRHBRQ1

ASeriizer / Deserializer(SerDes) ndi mipiringidzo iwiri yomwe imagwira ntchito yomwe imagwiritsidwa ntchito kwambiri polumikizana ndi anthu othamanga kwambiri kuti alipire zolowera / zotulutsa zochepa.Ma midadada awa amasintha deta pakati pa serial data ndi ma interfaces ofanana mbali iliyonse.Mawu oti "SerDes" nthawi zambiri amatanthauza zolumikizira zomwe zimagwiritsidwa ntchito muukadaulo ndi ntchito zosiyanasiyana.Ntchito yayikulu ya SerDes ndikupereka kutumiza kwa data pamzere umodzi kapena aosiyana awirikuti muchepetse kuchuluka kwa zikhomo za I/O ndi zolumikizirana.

Ntchito yoyambira ya SerDes imapangidwa ndi midadada iwiri yogwira ntchito: block ya Parallel In Serial Out (PISO) (aka Parallel-to-Serial converter) ndi block Serial In Parallel Out (SIPO) (aka Serial-to-Parallel converter).Pali mitundu inayi yomanga ya SerDes: (1) Parallel clock SerDes, (2) Embedded clock SerDes, (3) 8b/10b SerDes, (4) Bit interleaved SerDes.

Chotchinga cha PISO (Parallel Input, Serial Output) chimakhala ndi wotchi yofananira, mizere yolowetsa deta, ndi zingwe zolowetsa deta.Itha kugwiritsa ntchito mkati kapena kunjaPhase-Locked loop (PLL)kuchulukitsa wotchi yofananira yomwe ikubwera mpaka ma frequency a seri.Njira yosavuta ya PISO ili ndi imodzikusintha kaundulayomwe imalandira deta yofananira kamodzi pa wotchi yofananira, ndikuyitulutsa pamlingo wapamwamba kwambiri wa wotchi.Kukhazikitsa kungagwiritsenso ntchito akawiri-bufferlembetsani kuti mupewekusakhazikikaposamutsa deta pakati pa madera a wotchi.

Sipo (Serial Input, Parallel Output) block nthawi zambiri imakhala ndi wotchi yolandila, seti ya mizere yotulutsa deta ndi zingwe zotulutsa.Wotchi yolandirayo ikhoza kupezedwanso kuchokera ku datayo ndi seriyonikuchira kolokoluso.Komabe, ma SerDes omwe samatumiza wotchi yogwiritsira ntchito wotchi kuti atseke PLL kufupipafupi kwa Tx, kupewa kutsika.ma frequency a harmonicalipo mumtsinje wa data.Chotchinga cha SIPO chimagawaniza wotchi yomwe ikubwera mpaka mulingo wofanana.Zothandizira nthawi zambiri zimakhala ndi zolembera ziwiri zolumikizidwa ngati buffer iwiri.Regista imodzi imagwiritsidwa ntchito kuti iwunike mumtsinje wa serial, ndipo ina imagwiritsidwa ntchito kusunga deta ya mbali yocheperako, yofananira.

Mitundu ina ya SerDes imaphatikizapo ma encoding/decoding blocks.Cholinga cha encoding/decoding iyi nthawi zambiri ndikuyika malire a ziwerengero pamlingo wa kusintha kwa ma siginecha kuti zikhale zosavuta.kuchira kolokomu wolandira, kuperekakupanga, ndi kuperekaDC balance.