Ngemva kweminyaka emithathu nengxenye I-Raspberry Pi 3 Raspberry Pi Foundation izizukulwane ezintsha zamabhodi . Imodeli “B” isivele itholakalela i-oda, i-SoC BCM2711 entsha, okuyinguqulo eklanywe kabusha ngokuphelele ye-chip ye-BCM283X eyayisetshenziswe ngaphambilini, ekhiqizwe kusetshenziswa ubuchwepheshe benqubo ye-28nm. Intengo yebhodi ihlale ingashintshile futhi isengamadola angama-35 aseMelika.
I-SoC isafaka ama-cores amane we-64-bit ARMv8 futhi isebenza ngemvamisa ekhuphuke kancane (1.5GHz esikhundleni se-1.4GHz). Ngesikhathi esifanayo, ukuguqulwa kwenqubo yezobuchwepheshe kwenze kwaba nokwenzeka ukufaka esikhundleni se-Cortex-A53 nge-core-performance Cortex-A72 core, eyathatha ukusebenza ezingeni elisha. Ukwengeza, uguquko lwenziwe ekusetshenzisweni kwememori ye-LPDDR4, okuthi, uma kuqhathaniswa nenkumbulo esetshenziswe ngaphambilini ye-LPDDR2, inikeze ukwanda okuphindwe kathathu komkhawulokudonsa. Ngenxa yalokho, ekuhlolweni kokusebenza ibhodi elisha lidlula imodeli yangaphambilini ye-Raspberry Pi 3B+ izikhathi ezingu-2-4.
Omunye umehluko obalulekile uhlanganisa ukufakwa kwesilawuli se-PCI Express, izimbobo ezimbili ze-USB 3.0 (kanye nezimbobo ezimbili ze-USB 2.0) kanye nezimbobo ezimbili ze-Micro HDMI (ngaphambilini okwakusetshenziswa i-HDMI eyodwa enosayizi ogcwele), okukuvumela ukuthi ubonise izithombe kumamonitha amabili anekhwalithi engu-4K. . Isisheshisi sezithombe ze-VideoCore VI sibuyekezwe kakhulu, esisekela i-OpenGL ES 3.0 futhi ekwazi ukuqopha ividiyo engu-H.265 ngekhwalithi engu-4Kp60 (noma i-4Kp30 kumamonitha amabili). Amandla anganikezwa nge-USB-C (ngaphambilini eyayiyi-USB micro-B), nge-GPIO noma ngokuzikhethela. I-PoE HAT (Amandla phezu kwe-Ethernet).
Ngaphezu kwalokho, inkinga yesikhathi eside ene-RAM enganele isixazululiwe - ibhodi manje selinikezwa ngezinguqulo nge-1, 2 kanye ne-4 GB ye-RAM (ebiza u-$ 35, $ 45 no-$ 55, ngokulandelana), okwenza ibhodi elisha libe yisisombululo esifanele ukudala iziteshi zokusebenza, izinkundla zemidlalo, namaseva , amasango ezindlu ezihlakaniphile, amayunithi okulawula amarobhothi nezinhlelo zesimanje zemultimedia.
Isilawuli se-Gigabit Ethernet sithuthukisiwe, manje esixhunywe ku-SoC ngebhasi elihlukile le-RGMII, elivumela ukuthi lifinyelele ukusebenza okumenyezelwe okugcwele. I-USB manje isisetshenziswa ngesilawuli esihlukile se-VLI esixhunywe nge-PCI Express futhi sihlinzeka ngenani eliphelele le-4Gbps. Njengangaphambili, ibhodi ifakwe amachweba angu-40 e-GPIO, i-DSI (uxhumano lwesikrini sokuthinta), i-CSI (uxhumano lwekhamera) kanye ne-chip engenantambo esekela izinga le-802.11ac, ukusebenza kumafrikhwensi angu-2.4GHz kanye ne-5GHz kanye ne-Bluetooth 5.0.
Ngesikhathi esifanayo, ukukhululwa okusha kokusabalalisa kwanyatheliswa , okunikeza ukusekelwa okugcwele kwe-Raspberry Pi 4. Ukukhishwa kuyaphawuleka futhi ekushintsheleni kusisekelo sephakheji ye-Debian 10 "Buster" (ngaphambilini eyayiyi-Debian 9), ukuhlelwa kabusha okubalulekile kokusetshenziswa kubonwa kanye nokufakwa komshayeli omusha we-Mesa V3D ukwesekwa okuthuthukisiwe kwe-3D (okuhlanganisa nokufinyeleleka kusetshenziswa i-OpenGL ukusheshisa isiphequluli). Imihlangano emibili isilungiselwe ukudawunilodeka - efushanisiwe () kumasistimu weseva futhi uqedile (), ehlinzekwa ngendawo yomsebenzisi (imfoloko evela ku-LXDE). Ukufaka kusuka Kukhona amaphakheji angaba ngu-35 XNUMX atholakalayo.
Source: opennet.ru