Raspberry Pi 4 Bhodhi Yakaunzwa

Makore matatu nehafu mushure zvisikwa Raspberry Pi 3 Raspberry Pi Foundation yakaunzwa zvizvarwa zvitsva zvemapuranga Raspberry Pi 4. Model "B" yatovepo kuodha, equipped iyo itsva SoC BCM2711, inova vhezheni yakagadziridzwa zvachose yeiyo yakamboshandiswa BCM283X chip, yakagadzirwa uchishandisa 28nm process tekinoroji. Mutengo webhodhi wakaramba usina kuchinja uye uchiri madhora makumi matatu nemashanu ekuAmerica.

Iyo SoC ichiri kusanganisira ina 64-bit ARMv8 cores uye inomhanya painongowedzera zvishoma frequency (1.5GHz panzvimbo ye1.4GHz). Panguva imwecheteyo, shanduko yehunyanzvi hwekuita yakaita kuti zvikwanise kutsiva iyo Cortex-A53 neyepamusoro-inoshanda Cortex-A72 musimboti, iyo yakatora mashandiro kune imwe nhanho. Pamusoro pezvo, shanduko yakaitwa pakushandiswa kweLPDDR4 memory, iyo, ichienzaniswa neyakamboshandiswa LPDDR2 memory, inopa kuwedzera katatu kwebandwidth. Nekuda kweizvozvo, mukuedzwa kwekuita bhodhi idzva rinopfuura rakapfuura Raspberry Pi 3B+ modhi ne2-4 nguva.

Mimwe misiyano yakakosha inosanganisira kuisirwa kwePCI Express controller, maviri USB 3.0 madoko (pamwe maviri USB 2.0 madoko) uye maviri Micro HDMI ports (yaimbove imwe yakazara saizi HDMI yaishandiswa), ichikubvumidza kuti uratidze mifananidzo pamamonitor maviri ane 4K mhando. . Iyo VideoCore VI graphics accelerator yakagadziridzwa zvakanyanya, iyo inotsigira OpenGL ES 3.0 uye inokwanisa decoding H.265 vhidhiyo ine 4Kp60 quality (kana 4Kp30 pane maviri monitors). Simba rinogona kupihwa kuburikidza ne USB-C (yaimbova USB micro-B), kuburikidza neGPIO kana nesarudzo. module PoE HAT (Simba pamusoro peEthernet).

Uyezve, dambudziko renguva refu yekusakwana RAM rakagadziriswa - bhodhi ikozvino yave kupihwa mushanduro ine 1, 2 uye 4 GB ye RAM (inodhura madhora makumi matatu nemashanu, $35 uye $45 zvichiteerana), izvo zvinoita kuti bhodhi idzva rive mhinduro yakakodzera kugadzira nzvimbo dzekushandira, mapuratifomu emitambo, uye maseva, magedhi edzimba dzakangwara, marobhoti ekudzora zvikamu uye zvemazuva ano multimedia masisitimu.

Iyo Gigabit Ethernet controller yakagadziridzwa, iyo ikozvino yakabatana neSoC kuburikidza neyakasiyana RGMII bhazi, iyo inobvumira kuti iwane yakazara yakaziviswa kuita. USB yave kushandiswa kuburikidza neyakasiyana VLI controller yakabatana kuburikidza nePCI Express uye ichipa yakazara throughput ye4Gbps. Sekare, bhodhi rakagadzirirwa 40 GPIO ports, DSI (touch screen connection), CSI (camera connection) uye chip wireless chinotsigira 802.11ac standard, kushanda pa 2.4GHz uye 5GHz frequencies uye Bluetooth 5.0.

Panguva imwecheteyo, kuburitswa kutsva kwekugovera kwakabudiswa Raspbian, iyo inopa tsigiro yakazara yeRaspberry Pi 4. Kusunungurwa kunokoshawo pakuchinja kune Debian 10 "Buster" purogiramu yepakiti (yaimbova Debian 9), kugadziridzwa kwakakosha kwekushandiswa kwevashandisi uye kuiswa kwemutyairi mutsva weMesa V3D ane yakagadziridza zvakanyanya 3D rutsigiro (kusanganisira yekuwana uchishandisa OpenGL kuti ikurumidze bhurawuza). Magungano maviri akagadzirirwa kudhaunirodwa - akapfupikiswa (406 MB) ye server masisitimu uye yakakwana (1.1 GB), inopihwa nenharaunda yemushandisi pixel (forogo kubva kuLXDE). Kuisa kubva repositories Kune anenge 35 zviuru mapakeji aripo.

Source: opennet.ru