Mfundo ndi kuchuluka kwa zinthu za eMMC ndi UFS

eMMC (Embedded Multi Media Card)imatengera mawonekedwe ogwirizana a MMC, ndikuyika kachulukidwe kapamwamba ka NAND Flash ndi MMC Controller mu chipangizo cha BGA.Malinga ndi mawonekedwe a Flash, malondawo akuphatikiza ukadaulo wa Flash management, kuphatikiza kuzindikira ndi kukonza zolakwika, kufufuta ndi kulemba kwa Flash, kasamalidwe koyipa ka block, chitetezo chotsitsa ndi matekinoloje ena.Ogwiritsa sayenera kudandaula za kusintha kwa njira yowotcha ya flash ndi ndondomeko mkati mwa mankhwala.Nthawi yomweyo, chip imodzi ya eMMC imasunga malo ambiri mkati mwa bokosilo.

Mwachidule, eMMC=Nand Flash+controller+standard package

Zomangamanga zonse za eMMC zikuwonetsedwa pachithunzi chotsatira:

eMMC imaphatikiza Wowongolera Kung'anima mkati mwake kuti amalize ntchito monga kufufuta ndi kulemba kufananiza, kasamalidwe koyipa ka block, ndi kutsimikizira kwa ECC, kulola mbali ya Host kuyang'ana pa mautumiki apamwamba, kuthetsa kufunikira kwa kukonza kwapadera kwa NAND Flash.

eMMC ili ndi zotsatirazi:

1. Yesetsani kamangidwe ka kukumbukira kwa mafoni a m'manja.
2. The pomwe liwiro ndi mofulumira.
3. Kufulumizitsa chitukuko cha mankhwala.

eMMC muyezo

JEDD-JESD84-A441, lofalitsidwa mu June 2011: v4.5 monga tafotokozera mu Embedded MultiMediaCard (e•MMC) Product Standard v4.5.JEDEC inatulutsanso JESD84-B45: Embedded Multimedia Card e•MMC), muyezo wamagetsi wa eMMC v4.5 (zida zamtundu wa 4.5) mu June 2011. Mu February 2015, JEDEC inatulutsa version 5.1 ya eMMC standard.

Mafoni am'manja ambiri odziwika bwino apakati amagwiritsa ntchito eMMC5.1 flash memory yokhala ndi bandwidth ya 600M/s.Liwiro lowerengera motsatizana ndi 250M/s, ndipo liwiro lolemba motsatizana ndi 125M/s.

Mbadwo watsopano wa UFS

UFS: Universal Flash Storage, titha kuiona ngati mtundu wapamwamba kwambiri wa eMMC, womwe ndi gawo losungiramo zinthu zambiri lopangidwa ndi ma flash memory chips angapo, master control, ndi cache.UFS imapanga cholakwika kuti eMMC imangothandiza theka-duplex ntchito (kuwerenga ndi kulemba kuyenera kuchitidwa mosiyana), ndipo ikhoza kukwaniritsa ntchito yokwanira, kotero kuti ntchitoyo ikhoza kuwirikiza kawiri.

UFS idagawika mu UFS 2.0 ndi UFS 2.1 m'mbuyomu, ndipo miyezo yawo yovomerezeka yowerengera ndi kulemba ndi HS-G2 (High speed GEAR2), ndipo HS-G3 ndiyosasankha.Miyezo iwiriyi imatha kuyenda munjira ya 1Lane (njira imodzi) kapena 2Lane (njira ziwiri).Kuthamanga kowerengera ndi kulemba komwe foni yam'manja ingathe kukwaniritsa kumadalira muyezo wa UFS flash memory ndi kuchuluka kwa ma tchanelo, komanso kuthekera kwa purosesa kugwiritsa ntchito kukumbukira kwa UFS flash.Thandizo la mawonekedwe a basi.

UFS 3.0 imayambitsa ndondomeko ya HS-G4, ndipo bandwidth ya njira imodzi ikuwonjezeka kufika ku 11.6Gbps, yomwe imakhala yowirikiza kawiri HS-G3 (UFS 2.1).Popeza UFS imathandizira kuwerengera ndi kulemba kwa njira ziwiri, mawonekedwe amtundu wa UFS 3.0 amatha kufikira 23.2Gbps, yomwe ndi 2.9GB/s.Kuphatikiza apo, UFS 3.0 imathandizira magawo ochulukirapo (UFS 2.1 ndi 8), imathandizira kukonza zolakwika komanso imathandizira makanema aposachedwa a NAND Flash.

Kuti akwaniritse zosowa za zida za 5G, UFS 3.1 ili ndi liwiro la 3 kuwirikiza kawiri liwiro la m'badwo wam'mbuyomu wa kusungirako kwazinthu zonse.Kuthamanga kwa ma megabytes 1,200 pa sekondi iliyonse (MB/s) kumapangitsa kuti magwiridwe antchito azikwera kwambiri ndipo amathandizira kupewa kusungika pamene mukutsitsa mafayilo, zomwe zimakulolani kusangalala ndi kulumikizidwa kotsika kwa 5G mudziko lolumikizidwa.

Kuthamanga kwa kulemba mpaka 1,200MB/s (kuthamanga kwa kulemba kungasiyane ndi mphamvu: 128 gigabytes (GB) mpaka 850MB/s, 256GB ndi 512GB mpaka 1,200MB/s).

UFS imagwiritsidwanso ntchito mu hard-state U disk, 2.5 SATA SSD, Msata SSD ndi zinthu zina, UFS imalowa m'malo mwa NAND Flash kuti igwiritsidwe ntchito.