I-XC2C256-7TQG144C QFP144 xilinx chips 1.8V Inani lokokufaka 118 FLASH PLD IC electronic

Izimfanelo Zomkhiqizo

Bika Iphutha Lolwazi Lomkhiqizo

Buka Okufanayo

Amadokhumenti Nemidiya

Izigaba Zemvelo Nokuthekelisa

 I-complex programmable logic device (CPLD) iyidivayisi enengqondo ehlelekayo ngokuphelele KANYE/NOMA ama-array nama-macrocell.Ama-Macrocell amabhlogo wokwakha ayinhloko we-CPLD, aqukethe imisebenzi enengqondo eyinkimbinkimbi kanye nengqondo yokusebenzisa izinkulumo zefomu ezingavamile.KANYE/NOMA ama-arrays ahlelwa kabusha ngokuphelele futhi anomthwalo wemfanelo wokwenza imisebenzi enengqondo ehlukahlukene.Ama-Macrocell angabuye achazwe njengamabhulokhi asebenzayo anesibopho sokwenza ukuqondana okulandelanayo noma okuhlangene.

 Idivayisi eyinkimbinkimbi ehlelekayo iwumkhiqizo oqanjiwe uma uqhathaniswa namadivayisi anengqondo angaphambili afana ne-programmable logic arrays (PLAs) kanye ne-Programmable Array Logic (PAL).Amadivayisi anengqondo angaphambili ayengahleleki, ngakho-ke ingqondo yakhiwe ngokuhlanganisa ama-logic chips amaningi ndawonye.I-CPLD inobunzima phakathi kwama-PAL kanye ne-field-programmable gate arrays (FPGAs).Iphinde ibe nezici zezakhiwo zawo womabili ama-PAL nama-FPGA.Umehluko omkhulu wezakhiwo phakathi kwe-CPLD ne-FPGA ukuthi ama-FPGA asekelwe kumathebula okubuka, kanti ama-CPLD asekelwe olwandle lwamasango.

Izici ezijwayelekile zama-CPLD nama-FPGA ukuthi womabili anezinombolo ezinkulu zamasango kanye nezinhlinzeko eziguquguqukayo zokunengqondo.Nakuba izici ezivamile phakathi kwama-CPLD nama-PAL zihlanganisa inkumbulo yokumisa engaguquki.Ama-CPLD angabaholi emakethe yamadivayisi anengqondo ahlelekayo, anezinzuzo eziningi njengokuhlela okuthuthukile, izindleko eziphansi, ukungaguquguquki futhi kulula ukukusebenzisa.

 Aidivayisi eyinkimbinkimbi ehlelekayo(I-CPLD) yin aidivayisi ehlelekayo enengqondongobunkimbinkimbi phakathi kwalokho kwePALsfuthiAma-FPGA, kanye nezici zezakhiwo zazo zombili.Isakhiwo esikhulu se-CPLD yi-aama-macrocell, equkethe ukusetshenziswa okunengqondoi-disjunctive evamileizinkulumo kanye nokusebenza okunengqondo okukhethekile.

Izici[hlela]

Ezinye izici ze-CPLD zifana nePALs:

• Imemori yokumisa engaguquki.Ngokungafani nama-FPGA amaningi, ukucushwa kwangaphandleI-ROMayidingeki, futhi i-CPLD ingasebenza ngokushesha ekuqaliseni uhlelo.
• Kumadivayisi amaningi e-CPLD ayigugu, umzila uvimbela amabhulokhi amaningi okunengqondo ukuthi abe namasiginali okokufaka nawokukhiphayo axhunywe kumaphini angaphandle, kunciphisa amathuba okugcina isimo sangaphakathi kanye nengqondo enezingqimba ezijulile.Lokhu ngokuvamile akuyona into yama-CPLD amakhulu kanye nemindeni emisha yomkhiqizo we-CPLD.

Ezinye izici ezifanayoAma-FPGA:

• Inani elikhulu lamasango atholakalayo.Ama-CPLD ngokuvamile anokulingana nezinkulungwane kuya emashumini ezinkulungwaneamasango anengqondo, okuvumela ukusetshenziswa kwamadivayisi okucubungula idatha axaka ngokumaphakathi.Ama-PAL ngokuvamile anezilinganiso zamasango ezingamakhulu ambalwa kakhulu, kuyilapho ama-FPGA ngokuvamile esukela emashumini ezinkulungwane ukuya ezigidini ezimbalwa.
• Ezinye izinhlinzeko zomqondo zivumelana nezimo kakhulu kunoisamba-somkhiqizoizinkulumo, okuhlanganisa izindlela zempendulo eziyinkimbinkimbi phakathi kwamaseli amakhulu, kanye nengqondo ekhethekile yokusebenzisa imisebenzi ehlukahlukene evame ukusetshenziswa, njengeinombolo ephelele izibalo.

Umehluko ophawuleka kakhulu phakathi kwe-CPLD enkulu ne-FPGA encane ukuba khona kwenkumbulo engaguquki ku-chip ku-CPLD, evumela ukuthi ama-CPLD asetshenziselwe “i-boot loader” imisebenzi, ngaphambi kokunikeza ukulawula kwamanye amadivayisi angenaso isitoreji sawo esingunaphakade sohlelo.Isibonelo esihle yilapho i-CPLD isetshenziselwa ukulayisha idatha yokumisa ye-FPGA esuka kumemori engaguquguquki.^[1]

Ukwehluka[hlela]

Ama-CPLD ayeyisinyathelo sokuziphendukela kwemvelo kusuka kumadivayisi amancane angaphambi kwawo,Ama-PLA(okokuqala kuhanjiswe nguI-Signetics), futhiPALs.Lezi zilandelana zandulelwalogic ejwayelekileimikhiqizo, enganikezeli ukuhleleka futhi esetshenziselwa ukwakha imisebenzi enengqondo ngokufaka izintambo ngokoqobo ama-logic chips amaningana ajwayelekile (noma amakhulu awo) ndawonye (ngokuvamile ngezintambo ebhodini lesifunda eliphrintiwe noma amabhodi, kodwa ngezinye izikhathi, ikakhulukazi ukwenza i-prototyping, kusetshenziswaukugoqa ngocingoizintambo).

Umehluko omkhulu phakathi kwezakhiwo zedivayisi ye-FPGA ne-CPLD ukuthi ama-CPLD asekelwe ngaphakathiamatafula wokubheka(LUTs) ngenkathi ama-FPGA asebenzisaamabhlogo anengqondo.