XC2C256-7TQG144C QFP144 xilinx chips 1.8V Igalelo-imveliso ubuninzi 118 FLASH PLD IC electronic

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 Isixhobo esinocwangciso oluntsonkothileyo (CPLD) sisixhobo esinengqiqo enokucwangciswa ngokupheleleyo KUNYE/OKANYE noluhlu kunye nee-macrocell.Ii-Macrocell zezona zibhloko zokwakha eziphambili ze-CPLD, eziqulethe imisebenzi ye-logic enzima kunye nengqiqo yokuphumeza i-disjunctive form expressions.KUNYE/OKANYE ii-arrays zilungelelaniswa ngokupheleleyo kwaye zinoxanduva lokwenza imisebenzi eyahlukeneyo yokuqiqa.Ii-Macrocells nazo zinokuchazwa njengeebhloko ezisebenzayo ezinoxanduva lokwenza ulandelelwano okanye ingqiqo yokudibanisa.

 Isixhobo esintsonkothileyo esinokucwangciswa sengqiqo yimveliso eqalwayo xa kuthelekiswa nezixhobo zengqiqo zangaphambili ezifana nezicwangciso zokucwangcisa ezicwangcisekileyo (PLAs) kunye neProgrammable Array Logic (PAL).Izixhobo ezinengqondo zangaphambili azizange zicwangciswe, ngoko ke ingqiqo yakhiwe ngokudibanisa iichips ezininzi ezinengqondo kunye.I-CPLD inobunzima phakathi kwee-PAL kunye ne-field-programmable gate arrays (FPGAs).Ikwanazo neempawu zoyilo zazo zombini iiPAL kunye neeFPGAs.Umahluko ophambili wokwakha phakathi kwe-CPLD kunye ne-FPGA kukuba ii-FPGA zisekwe kwiitafile zokujonga, ngelixa ii-CPLD zisekwe kumasango olwandle.

Iimpawu eziqhelekileyo ze-CPLDs kunye ne-FPGAs kukuba bobabini banenani elikhulu lamasango kunye nezibonelelo eziguquguqukayo zengqiqo.Ngelixa iimpawu eziqhelekileyo phakathi kwe-CPLDs kunye nee-PAL ziquka imemori yoqwalaselo engaguqukiyo.Ii-CPLDs ziinkokeli kwintengiso yezixhobo ezicwangciswayo ezicwangcisiweyo, zineenzuzo ezininzi njengenkqubo ephucukileyo, ixabiso eliphantsi, ukungabinaguquguquki kwaye kulula ukuyisebenzisa.

 Aisixhobo esintsonkothileyo esicwangcisiweyo(I-CPLD) yiisixhobo sokucwangcisa esicwangcisiweyoenobunzima phakathi kwaleyo yePALskwayeIiFPGAs, kunye neempawu zoyilo zombini.Ibhloko enkulu yokwakha ye-CPLD yimacrocell, equlethe ukuphunyezwa kwengqiqoifom yesiqhelo edibeneyoiintetho kunye nemisebenzi ekhethekileyo yengqiqo.

Iimbonakalo[hlela]

Ezinye zeempawu ze-CPLD zifana nePALs:

• Inkumbulo yoqwalaselo olungaguquguqukiyo.Ngokungafaniyo neeFPGA ezininzi, uqwalaselo lwangaphandlei-ROMayifunwa, kwaye i-CPLD inokusebenza ngoko nangoko kuqaliso lwesixokelelwano.
• Kwizixhobo ezininzi ze-CPLD zelifa, indlela inyanzelisa uninzi lweebhloko ezinengqondo ukuba zibe nemiqondiso yegalelo kunye nemveliso eqhagamshelwe kwizikhonkwane zangaphandle, ukunciphisa amathuba okugcina urhulumente wangaphakathi kunye neengqikelelo ezinzulu.Oku ngokuqhelekileyo ayisiyonto yee-CPLD ezinkulu kunye neentsapho zemveliso ze-CPLD ezintsha.

Ezinye iimpawu ziyafanaIiFPGAs:

• Inani elikhulu lamasango akhoyo.Ii-CPLDs zidla ngokulingana namawaka ukuya kwishumi lamawakaamasango engqiqo, ukuvumela ukuphunyezwa kwezixhobo zokucwangcisa idatha ezintsonkothileyo.Ii-PALs ziqhele ukuba namakhulu ambalwa esango elilingana kakhulu, ngelixa ii-FPGA ziqhelekile ukusuka kumashumi amawaka ukuya kwizigidi ezininzi.
• Amanye amalungiselelo engqiqo abhetyebhetye ngakumbi kuneisixa-semvelisoamabinzana, kubandakanywa iindlela zengxelo ezintsonkothileyo phakathi kweeseli ezinkulu, kunye nengqiqo ekhethekileyo yokuphumeza imisebenzi eyahlukeneyo esetyenziswa ngokuqhelekileyo, njengeinani elipheleleyo izibalo.

Owona mahluko ubonakalayo phakathi kwe-CPLD enkulu kunye ne-FPGA encinci kubukho bememori ye-chip engaguqukiyo kwi-CPLD, evumela ukuba ii-CPLD zisetyenziselwe “umlayishi webhuthi” imisebenzi, ngaphambi kokunikezela ngolawulo kwezinye izixhobo ezingenalo ugcino lwazo olusisigxina.Umzekelo omhle kulapho iCPLD isetyenziselwa ukulayisha idatha yoqwalaselo lweFPGA ukusuka kwimemori engaguquguqukiyo.^[1]

Umahluko[hlela]

Ii-CPLDs yayilinyathelo lokuziphendukela kwemvelo ukusuka nakwizixhobo ezincinci ezandulelayo,IiPLAs(ithunyelwe kuqala nguIisigneki), kwayePALs.Ezi ngokulandelelanayo zandulelwaingqiqo esemgangathweniiimveliso, ezingazange zibonelele ngenkqubo kwaye zisetyenziselwe ukwakha imisebenzi yengqiqo ngocingo ngokwasemzimbeni iitshiphusi zengqiqo ezininzi (okanye amakhulu) kunye (ngokuqhelekileyo ngocingo kwibhodi yesekethe eprintiweyo okanye iibhodi, kodwa ngamanye amaxesha, ingakumbi kwiprototyping, usebenzisaucingo lokusongaiingcingo).

Owona mahluko uphambili phakathi kwe-FPGA kunye ne-CPLD yoyilo lwesixhobo kukuba ii-CPLDs zisekelwe ngaphakathi.iitafile zokujonga(LUTs) ngelixa iiFPGA zisebenzisaiibhloko zengqiqo.