eMMC (Karete e Kenyellelitsoeng ea Multi Media)e amohela segokanyimmediamentsi sa maemo a kopaneng a MMC, mme e kenyeletsa NAND Flash ya boleng bo hodimo le MMC Controller ho chip ya BGA.Ho ea ka litšoaneleho tsa Flash, sehlahisoa se kenyelelitse theknoloji ea tsamaiso ea Flash, ho kenyelletsa le ho lemoha liphoso le ho lokisoa, ho hlakola le ho ngola ka karolelano ea flash, tsamaiso e mpe ea li-block, tšireletso ea ho theola matla le mahlale a mang.Basebelisi ha ba hloke ho tšoenyeha ka liphetoho tse etsahalang tšebetsong ea flash wafer le ts'ebetso ka har'a sehlahisoa.Ka nako e ts'oanang, chip e le 'ngoe ea eMMC e boloka sebaka se eketsehileng ka har'a lebokose la li-motherboard.
Ka mantsoe a bonolo feela, eMMC=Nand Flash+controller+standard package
Kakaretso ea meralo ea eMMC e bonts'oa setšoantšong se latelang:
eMMC e kopanya Flash Controller ka hare ho eona ho phethahatsa mesebetsi e kang ho hlakola le ho ngola ho lekana, tsamaiso e mpe ea thibela, le ho netefatsa ECC, ho lumella lehlakore la Host ho tsepamisa maikutlo litšebeletsong tse ka holimo, ho felisa tlhokahalo ea ts'ebetso e khethehileng ea NAND Flash.
eMMC e na le melemo e latelang:
1. Nolofatsa moralo oa memori oa lihlahisoa tsa mohala oa thekeng.
2. Lebelo la ntlafatso le potlakile.
3. Ho potlakisa ntlafatso ea lihlahisoa.
eMMC standard
JEDD-JESD84-A441, e hatisitsoeng ka June 2011: v4.5 joalokaha ho hlalositsoe ho Embedded MultiMediaCard (e•MMC) Product Standard v4.5.JEDEC e boetse e lokolla JESD84-B45: Embedded Multimedia Card e•MMC), tekanyetso ea motlakase bakeng sa eMMC v4.5 (version 4.5 devices) ka June 2011. Ka February 2015, JEDEC e ile ea lokolla version 5.1 ea eMMC standard.
Boholo ba lifono tsa mehala tse bohareng ba bohareng li sebelisa memori ea flash ea eMMC5.1 e nang le bandwidth ea theory ea 600M/s.Lebelo la ho bala ka tatellano ke 250M/s, 'me lebelo la ho ngola ka tatellano ke 125M/s.
Moloko o mocha oa UFS
UFS: Universal Flash Storage, re ka e nka e le mofuta o tsoetseng pele oa eMMC, e leng mochini oa polokelo o hlophisitsoeng o entsoeng ka li-chips tse ngata tsa flash memory, master control, le cache.UFS e etsa bofokoli ba hore eMMC e tšehetsa feela ts'ebetso ea halofo ea duplex (ho bala le ho ngola e tlameha ho etsoa ka thoko), 'me e ka finyella ts'ebetso e feletseng ea duplex, kahoo ts'ebetso e ka imena habeli.
UFS e ne e arotsoe ka UFS 2.0 le UFS 2.1 pejana, ’me litekanyetso tsa tsona tse tlamang bakeng sa lebelo la ho bala le ho ngola ke HS-G2 (High speed GEAR2), ’me HS-G3 ke ea boikhethelo.Lihlopha tse peli tsa litekanyetso li ka sebetsa ka mokhoa oa 1Lane (mocheso o le mong) kapa oa 2Lane (habeli-channel).Ke lebelo le lekae la ho bala le ho ngola leo mohala oa cellular o ka le fihlelang ho latela maemo a memori ea Flash ea UFS le palo ea liteishene, hammoho le bokhoni ba processor ba ho sebelisa memori ea flash ea UFS.Ts'ehetso ea sebopeho sa libese.
UFS 3.0 e hlahisa tlhaloso ea HS-G4, 'me bandwidth ea mocha o le mong e eketsoa ho 11.6Gbps, e leng makhetlo a mabeli a ts'ebetso ea HS-G3 (UFS 2.1).Kaha UFS e ts'ehetsa ho bala le ho ngola ha li-channel tse peli, bandwidth ea interface ea UFS 3.0 e ka fihla ho 23.2Gbps, e leng 2.9GB/s.Ho phaella moo, UFS 3.0 e tšehetsa likarolo tse ling (UFS 2.1 ke 8), e ntlafatsa ts'ebetso ea ho lokisa liphoso le ho tšehetsa mecha ea morao-rao ea NAND Flash flash.
E le ho finyella litlhoko tsa lisebelisoa tsa 5G, UFS 3.1 e na le makhetlo a 3 lebelo la ho ngola la moloko o fetileng oa polokelo ea flash-more-purpose.Lebelo la drive la 1,200 megabyte motsotsoana (MB/s) le ntlafatsa ts'ebetso e phahameng 'me le thusa ho thibela ho buffer ha u ntse u khoasolla lifaele, ho u fa monyetla oa ho natefeloa ke khokahanyo e tlase ea 5G lefatšeng le hokahaneng.
Mabelo a ho ngola a fihlang ho 1,200MB/s (mabelo a ho ngola a ka fapana ho ea ka boholo: 128 gigabytes (GB) ho fihla ho 850MB/s, 256GB le 512GB ho fihla ho 1,200MB/s).
UFS e boetse e sebelisoa ho hard-state U disk, 2.5 SATA SSD, Msata SSD le lihlahisoa tse ling, UFS e nkela NAND Flash sebaka bakeng sa tšebeliso.
Nako ea poso: May-20-2022
