ARM Cortex A7 processor: izici kanye nokubuyekeza

ARM Cortex A7 . Kulesi sihloko sizoxoxa asekelwe Cortex A7 processor izakhiwo. imikhiqizo semiconductor kwezindlu kusekelwe kuyo ingatholakala amafoni smart, imizila, ithebhulethi PC namanye amadivayisi mobile, lapho yena kuze kube muva nje matasa isikhundla okuholela kule ingxenye emakethe. Manje-ke kancane kancane indawo ngaphezu entsha futhi fresh processor izixazululo.

lwati lolufinyetiwe asekelwe inkampani

началась в 1990 году, когда она была основана Робином Саксби. Umlando izinkampani asekelwe waqala ngo-1990, lapho yasungulwa by Robin Saxby. isisekelo Same ukudalwa kwako kwakufana microprocessor izakhiwo ezintsha. , то после образования данной компании появилась достойная альтернатива в виде RISC. Ngaphambi ukuthi isikhundla evelele emakethe x86 CPU zazingasangikhathazi CISC, ngemva kokwakhiwa inkampani uvele njengoba okunye njengabakufanelekele ukuhlaziswa RISC. Esimweni sokuqala, ukuqaliswa ikhodi lancipha 4 zinyathelo:

1. Ulungiselela imiyalelo umshini.

2. Buciko le microcode ukuguqulwa.

3. Ithola micro-imiyalelo.

4. ukuqaliswa ngeengaba micro-imiyalelo.

сновная же идея архитектуры RIS С состояла в том, что обработку программного кода можно свести к 2 этапам: Yemibhalomfihlo efanayo umqondo ris izakhiwo sasihlanganisa yokuthi ukucutshungulwa ikhodi Uhlelo kungenziwa ngokufingqiwe 2 izigaba:

1. RISC- инструкций. Ukulungiselela RISC- imiyalelo.

2. RISC- инструкций. RISC- neziqondiso.

ак в первом, так и во втором случае есть как плюсы, так и существенные недостатки. Hhawu yokuqala futhi esimweni sesibili, kukhona kokubili izinzuzo kanye nokushiyeka abalulekile. RISC ( в том числе и ARM Cortex A7 , представленная 2011 году) — рынок мобильных устройств. x86 ngempumelelo iwine emakethe computer, futhi RISC (kuhlanganise asekelwe Cortex A7, yethulwa ngo 2011) - emakethe zamadivayisi eselula.

Indaba le Cortex A7 izakhiwo. imphawu letibalulekile

Ekwenteni "Cortex A8" njengesisekelo sezingxoxo "Cortex A7." Umqondo oyinhloko we Onjiniyela kulokhu kwaba ukuqinisekisa, ukwandisa umkhiqizo futhi kakhulu ngcono songa amandla esihamba ukucutshungulwa izixazululo. . Yilokho ekugcineni kwenzeka, onjiniyela inkampani ARM. Esinye isici esibalulekile kulokhu ukuthi kwakungekho ithuba ukudala big.LITTLE CPU ubuchwepheshe. Okungukuthi, i-chip Semiconductor ingafaka iyunithi Computing 2. Omunye wabo yayihloselwe ukuxazulula imisebenzi kakhulu elula nge sakugcina amandla ukusetshenziswa, njengoba umthetho, kule ndima, futhi wenziwa "Cortex A7" ekujuleni kwenhliziyo. Eyesibili eklanyelwe ukugijima software enzima kakhulu futhi esekelwe Computing amayunithi "Cortex A15" futhi "A17 Cortex". Ngokusemthethweni "Cortex A7" yethulwa, njengoba kushiwo ngaphambili, ngo-2011. Nokho, wokugaya lokuqala asekelwe Cortex A7 wabona ngonyaka ukukhanya kamuva, okusho 2012.

ubuchwepheshe ukukhiqizwa

Ekuqaleni, imikhiqizo Semiconductor ezisekelwe eBhayibhelini ezikhiqizwa A7 65 nm inqubo ubuchwepheshe. Manje lobu buchwepheshe usuphelelwe yisikhathi. Esikhathini esizayo, it wadedelwa izizukulwane ezimbili A7 amazinga izilimi yokuvuma for 40 nm nokungu-32 NM. Kodwa manje ziye babe asihlobene. Kamuva kakhulu CPU models ezisuselwa kulesi izakhiwo usuvele ngamanani of 28 nm, nokuthi ingasatholakala ukudayiswa. Ngaphezu kwalokho kwathatha izinqubo ezintsha zobuchwepheshe nemithetho emisha yokwemukela kanye izakhiwo ephelelwe yisikhathi alindele kuwufanele neze ke. Chips esekelwe A7 manje elalihlala isabelomali ingxenye kakhulu emakethe eselula futhi kancane kancane esikhundleni amagajethi kakade ngesisekelo A53, okuyinto cishe ngesikhathi esifanayo amandla imingcele has ezingeni ukusebenza ephakeme.

Architecture sekhompiyutha core

1, 2, 4 noma 8 cores kungenzeka zifakwe CPU esekelwe asekelwe Cortex A7. Izimpawu izilimi e Kulo mBhalo, abonisa ukuthi isakhiwo chip empeleni 2 kuya ku 4 cluster-nucleus. 2-3, wokugaya imikhiqizo entry level esekelwe chips ne 1 im noma 2 ikhompyutha amamojuli. Izinga isilinganiso ithatha 4-core izixazululo. Nokho, ingxenye premium kwaba 8-core chips. sekhompiyutha ngamunye core ezisuselwa kulesi izakhiwo kuhlanganisa amamojula ezilandelayo:

• лок обработки чисел с плавающей запятой ( FPU). B Ilokhi ukucutshungulwa iphuzu elintantayo (FPU).

• Inqolobane Level 1.

• NEON для оптимизации работы ЦПУ. NEON iyunithi nokwandisa CPU.

• ARMv7. ARMv7 Computing mojuli.

Kwakukhona zingxenye ezilandelayo ezivame kuwo wonke nuclei endaweni CPU:

• Inqolobane L2.

• Nuclei Control iyunithi CoreSight.

• Ukuphatha idatha Isilawuli Amba ibhasi ne kancane 128 izingcezu.

kungenzeka imvamisa

Inani esiphezulu elinikeziwe iwashi imvamisa sekhompiyutha izakhiwo zingahluka kusuka 600 MHz ukuze 3 GHz. Phawula futhi ukuthi leli ipharamitha ecacisa umthelela esiphezulu ukusebenza izinguquko ohlelweni computer. Kulokhu-ke imvamisa oluthinta ngqo izici ezintathu:

• inkinga Ubunzima ukuba ixazululwe.

• I degree of isofthiwe nokwenza multithreading.

• Inani lamanje izinga lokushisa Semiconductor chip.

Njengoba isibonelo sicabanga ukusebenza algorithm MT6582 chip, ogxile A7 futhi kuhlanganisa amayunithi ezine yezamakhompyutha okuyinto imvamisa izinguquko kusuka 600 MHz ukuze 1.3 GHz. Kwimodi engenzi lutho, it has processing unit babe munye kuphela Computing iyunithi kuphela, futhi usebenza ku-imvamisa aphansi okungenzeka 600 MHz. Namuhla kunesimo esithi asifane kuyinto esimweni lapho isicelo elula ku igajethi mobile kuzokwethulwa. Kodwa lapho uhla lwemisebenzi avele ithoyizi resource- nge elungiselelwe multithreading, uzophiwa ngokuzenzakalelayo baphendukele umsebenzi wonke 4 ikhodi processing unit ngesikhathi imvamisa 1.3 GHz. Njengoba iningi ashisayo Ukushisa CPU core kuzonciphisa imvamisa noma ngisho esitshalweni off. Ngakolunye uhlangothi, le ndlela inikeza energoeffektivnst, kanye nezinye - chip sezingeni elamukelekile ukusebenza.

inkumbulo Inqolobane

2 kuphela isilondolozi ezingeni ngokunqaba asekelwe Cortex A7. Izimpawu chip Semiconductor yena, iphuzu yokuthi ezingeni lokuqala saziso ihlukaniswe neengcezu 2 alinganayo. должна хранить данные, а другая — инструкции. Omunye wabo ukugcina idatha, kanye nezinye - imiyalelo. азмер кеша на 1-ом уровне по спецификациям может быть равен 64 Кб. Isifinyezo p Ubukhulu isilondolozi izinga loku-1 Ukucaciswa kungenzeka elilingana 64 KB. Ngenxa yalokho, sithola 32 KB yedatha kanye 32 KB ikhodi. е ть от конкретной модели ЦПУ. Inqolobane ezingeni 2 Kulokhu kuyoba bancike ikakhulukazi e-CPU models. Inani ezincane kunazo zonke kungaba 0 MB (ngamanye amazwi, ingabi khona) kanye ngobukhulu - 4MB.

I-RAM isilawuli. izici zayo

Esakhelwe ngaphakathi isilawuli RAM ifakwe yimuphi ARM processor Cortex A7. izici uhlelo lobuchwepheshe abonisa ukuthi yakhelwe ukusebenza ngokuhlanganyela RAM LPDDR3 ejwayelekile. Ezinconyiwe imvamisa inkumbulo ukusebenza kuleli cala ilingana 1066 MHz kanye 1333 MHz. Usayizi wokugcina we-RAM, okuyinto kungabonakala umkhuba, ngoba imodeli kunikezwa chip kuyinto 2GB.

ihluzo okuhlangene

Njengoba kulindelekile, amadivaysi idatha sekhompiyutha babe oludidiyelwe ihluzo subsystem. рекомендует использовать в сочетании с этим ЦПУ графическую карту собственной разработки Mali - 400MP2 . inkampani yokukhiqiza asekelwe uncoma ukuthi usebenzise ngokuhlanganyela CPU ihluzo ikhadi ukuthuthukiswa eMali siqu - 400MP2. Kodwa ukusebenza salo avame akwanele ukuba yilo bezikhali amadivayisi sekhompiyutha. Ngakho-ke chips Onjiniyela sisetshenziswa ndawonye chip ikhadi iyashelela, isibonelo, Amandla VR6200.

izici isofthiwe

Kunezinhlobo ezintathu wokusebenza kuhloswe asekelwe izilimi:

• от поискового гиганта Google. Android kusukela kusesho giant-Google.

• от APPLE. iOS kusukela Apple.

• от «Майкрософт». Windows Mobile kusukela "Microsoft".

Yonke enye into isofthiwe simiso singakafiki wathola ukusakazwa. I share ngobukhulu emakethe software okunjalo akukhona nzima ukuqagela, kuthatha Android. Loluhlelo idivayisi elula enembile isikhombimsebenzisi futhi kusekelwe kuyo kukhona ezingeni kokuqala kakhulu futhi kufinyeleleke kakhulu. Ngaphambi version 4.4 obanzi, kwaba-32-bit, futhi 5.0 manje kusekela-64-bit ne-computing. , в том числе и ARM Cortex A7. Lolu hlelo lokusebenza siyasebenza kunoma iyiphi CPU umndeni izakhiwo RISC, kuhlanganise asekelwe Cortex A7 ngempumelelo. Engineering imenyu - Esinye isici esibalulekile isofthiwe yohlelo. Nayo ungakwazi kakhulu reconfigure izici OS. Ukufinyelela kule imenyu efanayo lungatholakala besebenzisa ikhodi ukuthi CPU ngemodeli ngayinye ihlukile.

Esinye isici esibaluleke Linux operating system - ukufakwa zonke izibuyekezo kungenzeka ngokuzenzakalela. Ngakho-ke, ngisho amathuba amasha ivele asekelwe chip umndeni Cortex A7. Firmware ungawafaka. Uhlelo lwesibili kuhloswe mobile izinkampani amagajethi Apple. Amadivayisi anjalo ngokuvamile hlala premium - ingxenye futhi amazinga ehlukene ukusebenza kanye nezindleko. пока не получила большого распространения. Popular OS Windows Mobile ubuso ongakabi wathola ukusakazwa. Amadivayisi ngokusekelwe kunjalo, kunoma iyiphi ingxenye yezinto zobuchwepheshe mobile, kodwa inani elincane isofthiwe isicelo kuleli cala iyisici nokukhawulela ngoba ayanda yayo.

processor onobuhle

I etholakalayo kakhulu futhi okungenani zikhiqize Kulokhu kukhona 1-core chips. I okwandile kakhulu phakathi kwabo MT6571 etholakele umtapo inkampani. Ngezinye isinyathelo kulezi ezingezansi ezimbili CPU asekelwe Cortex A7 Dual Core. Njengoba isibonelo, MT6572 avela kubo bonke nomkhiqizi efanayo. An izinga nakakhulu ukusebenza enikeziwe Quad Core asekelwe Cortex A7. Chip ethandwa kakhulu kusukela kule umndeni MT6582, okuyinto ngisho manje ingatholakala amagajethi ephathekayo, ezingeni kokuqala. Nokho, izinga elikhulu kunawo wonke ukusebenza ngokusuku CPUs 8-core, elalingelamaFilisti 6595 MT.

Amathemba ukuqhubeka

Ungakwazi namanje ukutholakala esitolo amashalofu kumadivayisi eselula okuncike Semiconductor processing unit ngesisekelo 4x asekelwe Cortex A7. Lokhu MT6580, MT6582 futhi "Snapdragon 200". Konke lokhu chips zihlanganisa ezine Computing iyunithi futhi ube esihle ekusetjentisweni kwemandla ngalokuyimphumelelo. Futhi kulokhu, izindleko kakhulu, nesizotha kakhulu. Kodwa namanje the best izikhathi kuyinto izakhiwo sekhompiyutha iphelile. yokuthengisa Eliphakeme imikhiqizo esekelwe liwela 2013-2014, lapho emakethe for zobuchwepheshe mobile enendawo cishe akukho okunye. Futhi kulokhu sikhuluma isabelomali njengoba idivayisi 1 noma 2 ikhompyutha amamojuli kanye amagajethi iwuhlelo nge 8-core CPU. Okwamanje, kancane kancane displaces emakethe "Cortex A53", okuyinto ebalulekile eyaba Ushintshe-64-bit nguqulo yohlelo A7. Kulokhu, izinzuzo main of esasisandulele, ke uye walondoloza ngokuphelele, futhi esikhathini esizayo ngokuqinisekile ngemva kwaso.

I umbono ochwepheshe kanye nabasebenzisi. Izibuyekezo Real chips ezisuselwa kulesi izakhiwo. Ubukghoni nokubhalelwa

Yiqiniso, isenzakalo esibalulekile ukuze kuzuze kumadivayisi eselula bekulokhu ukuvela sekhompiyutha izakhiwo asekelwe Cortex A7 amadivaysi. Ubufakazi best lokhu wukuthi kumadivayisi kwezindlu kusekelwe kuyo sekudayiswe ngempumelelo iminyaka engaphezu kuka-5. Yiqiniso, manje amandla CPU ngesisekelo the A7 isivele akwanele ngisho imisebenzi maphakathi no-level, kodwa ikhodi kakhulu elula ku chips okunjalo futhi siyasebenza ngempumelelo namuhla. Uhlu software efana kufaka phakathi ividiyo, ukulalela umsindo, ukufunda izincwadi, ngokuphuma singena ezingosini ze-web, ngisho namathoyizi kakhulu elula, kulesi simo ukusebenzisa ngaphandle kwezinkinga. Kuyinto kule futhi ugxile ehola inthanethi nezokusigcoba anikezelwe amagajethi zeselula devaysa njengoba ochwepheshe kwalolu hlelo, kanye nabasebenzisi abavamile. Ukhiye lokususa A7 - ukungabi khona usekelo-64-bit ne-computing. Kodwa izinzuzo ezinkulu zihlanganisa inhlanganisela yayo esiphelele kwegezi ukusebenza.

Imiphumela

это целая эпоха в мире мобильных устройств. Yiqiniso, izakhiwo asekelwe Cortex A7 - enkathini isizwe sonke sabantu emhlabeni eselula. Ngangithandaza ngokuqondene obhekwe amadivayisi yayo ngeselula zitholakala futhi ngempela elikhiqizayo. Futhi iqiniso nje ukuthi eminyakeni engaphezu kuka-5 ithengiswe ngempumelelo lingobunye ubufakazi. Kodwa uma namagajethi lokuqala phansi salo e kumasegmenti phakathi premium wemakethe, futhi manje ngabo kwaba ekilasini isabelomali kuphela. Lokhu izakhiwo siphelelwe yisikhathi futhi kancane kancane inyamalala.