Emva kweminyaka emithathu enesiqingatha Raspberry Pi 3 Raspberry Pi Foundation izizukulwana ezitsha zeebhodi . Imodeli “B” sele ifumaneka ukuze iodolwe, i-SoC entsha ye-BCM2711, eyinguqulelo ehlaziyiweyo ngokupheleleyo ye-chip ye-BCM283X esetyenziswe ngaphambili, eveliswe ngokusebenzisa iteknoloji yenkqubo ye-28nm. Ixabiso lebhodi liye lahlala lingatshintshi kwaye lisekho i-35 yeedola zase-US.
I-SoC isabandakanya ii-cores ezine ze-64-bit ze-ARMv8 kwaye ibaleka kuphela ngokunyuka kancinci (1.5GHz endaweni ye-1.4GHz). Ngelo xesha, utshintsho kwinkqubo yezobugcisa yenze ukuba kube lula ukutshintsha i-Cortex-A53 kunye ne-core-performance Cortex-A72 core, eyathatha ukusebenza kwinqanaba elitsha. Ukongeza, utshintsho lwenziwe ekusebenziseni imemori ye-LPDDR4, ethi, xa kuthelekiswa nememori esetyenzisiweyo ye-LPDDR2, ibonelela ngokuphindwe kathathu kwi-bandwidth. Ngenxa yoko, kwiimvavanyo zokusebenza ibhodi entsha idlula imodeli yangaphambili yeRaspberry Pi 3B + ngamaxesha angama-2-4.
Olunye ulwahlulo olubalulekileyo lubandakanya ukubandakanywa komlawuli we-PCI Express, izibuko ezimbini ze-USB 3.0 (kunye namachweba amabini e-USB 2.0) kunye nezibuko ezimbini ze-Micro HDMI (ngaphambili i-HDMI egcweleyo yayisetyenziswa), ikuvumela ukuba ubonise imifanekiso kwiimonitha ezimbini ezinomgangatho we-4K. . I-VideoCore VI ye-accelerator ye-graphics ihlaziywe kakhulu, exhasa i-OpenGL ES 3.0 kwaye iyakwazi ukucacisa ividiyo ye-H.265 ngekhwalithi ye-4Kp60 (okanye i-4Kp30 kwiimonitha ezimbini). Amandla anokubonelelwa nge-USB-C (ngaphambili i-USB micro-B), ngeGPIO okanye ngokukhetha I-PoE HAT (Amandla phezu kwe-Ethernet).
Ngaphezu koko, ingxaki yexesha elide kunye ne-RAM enganeleyo iye yasombululwa - ibhodi ngoku inikezelwa kwiinguqulelo kunye ne-1, i-2 kunye ne-4 GB ye-RAM (ixabisa i-$ 35, i-$ 45 kunye ne-$ 55, ngokulandelanayo), eyenza ibhodi entsha isisombululo esifanelekileyo ukudala izitishi zokusebenza, amaqonga emidlalo, kunye neeseva, amasango ezindlu ezihlakaniphileyo, iiyunithi zokulawula iirobhothi kunye neenkqubo zemultimedia zanamhlanje.
Umlawuli we-Gigabit Ethernet uphuculwe, ngoku uqhagamshelwe kwi-SoC ngokusebenzisa ibhasi ye-RGMII eyahlukileyo, evumela ukuba ifezekise ukusebenza okupheleleyo. I-USB ngoku iphunyezwe ngesilawuli se-VLI esahlukileyo esiqhagamshelwe nge-PCI Express kunye nokubonelela nge-throughput epheleleyo ye-4Gbps. Njengangaphambili, ibhodi ixhotyiswe ngamachweba angama-40 e-GPIO, i-DSI (uxhulumaniso lwesikrini sokuthinta), i-CSI (uqhagamshelwano lwekhamera) kunye ne-chip ye-wireless exhasa umgangatho we-802.11ac, ukusebenza kwi-2.4GHz kunye ne-5GHz i-frequencies kunye ne-Bluetooth 5.0.
Kwangaxeshanye, kwapapashwa ukukhutshwa okutsha kosasazo , ebonelela ngenkxaso epheleleyo ye-Raspberry Pi 4. Ukukhululwa kwakhona kuphawuleka kwinguqu kwisiseko sephakheji ye-Debian 10 "Buster" (ngaphambili i-Debian 9), ukulungiswa okuphawulekayo kojongano lomsebenzisi kunye nokubandakanywa komqhubi omtsha we-Mesa V3D kunye iphuculwe kakhulu inkxaso ye-3D (kubandakanywa nokufikeleleka usebenzisa i-OpenGL ukukhawulezisa isikhangeli). Iindibano ezimbini zilungiselelwe ukukhutshelwa - efinyeziweyo () yeenkqubo zomncedisi kwaye ugqibezele (), ebonelelwe ngokusingqongileyo komsebenzisi (ifolokhwe esuka kwi-LXDE). Ukuhlohla ukusuka Kukho malunga nama-35 amawaka eephakheji ezikhoyo.
umthombo: opennet.ru