eMMC失效模式分析
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1、eMMC 失效模式分析1. eMMC 初始化失败A、确认host支持V45?-host可能不支持V45,造成无法识别到device type7.4J? DEMCETYPE 196JThis field defines the tjpe of the Be viceTnbh 103 -u pe-sBitDvke Typer爲ReseivedHS2QQ Single Dala Rnc l MMC ifi 200 3Hz - ! JJHS200 Single Daia Rate e*MMC h 200 MHz - 1 8V O3Hjgh-Spttd DiHl Data Rateg-MMC ft 52
2、MHz - I.2V I O2Hili Speed D帕 I Dn相 R利用 CMD8 读出 EXT_CSD0 Q?辛7?早1?q耳00000001,_ 0000000000000000000000000000000OOOOOOlOh000000000000000000000000000000000OO0O020h000000000000000000000000000000000OO0O030h000000000000000001000000000000000OOOO04Oh000000000000000000000000000000000OOOO05Oh0000000000000000000
3、00000000000000OO0O06Oh00000000000000000000000000000000OOOOOOTQh000000000000000000000000000000000OO0O030h000000000000000000000000000000000OO0O090h000000000000000000000000003100000OO0O0aOh03000000000004IF0000000000000000OOOOOObOh000000坠严00000000000000000000OOOOOOcOh050002|oo02040707070700030-3OBOOOOOO
4、dOhOB03QBOCTEA0000110007OB030132OOOOOOeOh1005080007FFFF1502000308000007070OO0O0f0h00OA0000000000000000000000000000OOOOOlOOn00000000000000000000000000000000OOOOOllOh000000000000000000000000000000000OO0O120h00000000000000000000000000000000OOO0O13Oh0000000000000000000000000000000000000140b0000000000000
5、00000000000000000000OO0O150h000000000000000000000000000000000OOOO160h00000000000000000000000000000000OOOOOlTQh0000000000000000000000000000000000000130b0000000000000000000000000000000000000190b00000000000000000000000000000000OOOOOlaOh000000000000000000000000000000000OO0Olb0h00000000000000000000000000
6、000000OOOOOlcOh0000000000000000000000000000OOOOOldOh0000000000000000000000000000M 511OOOOOleOh0000000000000000000000000000OOOOOlfOh00000000000001030100002712120000B、频率是否正确？400KHz)IQ.5 Bui timingwin（V（a）max VjiJlidlJ nri|iDnln must jiIw遇严 be %niq?kd on die nsingaf the clockFlurt* 67 - liihilrL 4)liHr
7、jbm: iljhi ItipuHo則piH二 rsH T一吾耳 Un-L二邑-1)昭巳勺妪 q_T?F2-】 宅；|3 .9- Qo 严芒_.巧口 主二乩 P一求-朗vUMj-|9一 HEW朗*畫7竺 PIE一仟匕召 tnLJ.q我 p-定巴 .=-J*二卫 AiilquxJ J 忘畐土呂莒？v土 PSJS 七 2 3-CUU单三qdcoooesv*匸旦弓乩妞q-c二2rplP- - j 閔tss韵巨As-U上 一 -盜云U二二 JTS归尹存.邑Mpal Mwq&?_ AH?- u 5二生二 Jqlfa一a.艺!&s 2d225 2 护VL=m口 Xg-E 2-s盍 puKa&x 七対音-2
8、弗蛊 0 乱畧聖 ASCF 4-.gAs一一倉 2-=OQdlvsuxl 號EpTMOq aleM ilo=c:yKTdcv-41 JQs泉 SEI40*=1Q pur j=?p-rpLTmp lJ-丘-zJJIrqJvXMU dm 圮 a ml 它-_.2-=t=JP 3-E.-4J.=LP2M._dL?a.1o世呂匕卫 笛 昌?号耳i-s主二LS电 呂wd 一占=a fsoqllLPOJbg - Lp=51. =Mpuodnds-pne-sEdlkKNP.JQAaanpjsw a二匕陵一2= 一蚩 胃 - pfnovl-占-Eq) 1- _=dLUcu8.蛊.豈罗-_ie PTJE启君 2
9、 出 ”6a.启-七 A5(5.i占亠-舌 J- m-=与萃 s 一OJM 肉 4-2OSESWO m =誉 1=3q JI 曲丘OA 2吕sUm兰 u目运 I 于 5 善CHUEI 一官二 1 nvlunEW 2 兰二 ncg pus 吩协flLaJ ”o-担s即-E-J- . r爲OOWXM& DWM.-ZS壬曰卫 _一KJ- BkB&MiUL一一 番B乱罟-OA 3X1TJ = L 一 左-二二-塞 心.d爭 上-=s13P -= 23 屮】d-u百二去丐兽 口口一 d-vs *CPQ 3 呂I =工念-sti:记二二炒三-屈七！*逼岂已立8-sJpqtJ?小?1e昌U匹 miGA U.
10、E-UU=二unw豊sp s2A国匚 xldj. 一du,.HA总.EJ選田畑欣Bo_* D2W 一.2苣本整 0亡drf.VlL.=】WJ U-kJ uVI 工 VI r ti_rJ-l7 sVidg7 UjOl讲趙mmNHXbJ击二百a* sJF7.呈Er- 1atn9=WP 3WsW|Ji2S EdEzs e-J LSJ* iRA ji 寸电E兰g2T3I12 s_云1 *克 E7BCLIU.圧 . JW2BA. 普=:芝=.二=gi.vn二LFT,-三一二f-工喘-AK口 ！：=IIEuIy =F& 匸匕口 Tddl10.1.1 0MMC power-upAn eMMC bus pow
11、er-up is handled locally in each device and in the bus master. Figiue 60 shows the power-up sequence and is followed by specific iiistnictions regarding the power-up sequence.Supply voltag亡Vcc nuxVcc mmMeniors- field working voltage range一 一 一 一 一 一Power up tuneCMDldelav：Figure 60 - *MMC power-up di
12、agram Power up trni亡clock cycles, the supply ramp-up nme. or the boot operanoiL pnodC ard logic wor king voltaEf ranseOptional repeutions of C MD1 until rhe card repond with busv bit st.Ready State (ready).Wait-IRQState (irq)(.Identification State (ident)Idle State (idle)From all states except inact
13、iveFigure 22 - *MMC state diagram (Device klentifkation mode)DeviceCard-Identification ModeInterrupt Mode ； Data Transfer ModeDevice controlsDevice ReleasesData Transfer ModeFrom all states except Sleep State (sip) in data-lransfer modeCMD1Host cannot use Sector access ModeCMDO withArg = 0x00000000(
14、 2 G吕 Devices) . Inactive State.刚 *CIVD3Power OnStart BitDetectedCMD40/ Stand-by State (stby)CIVD2CMD5D 、客户的 PCB 上是否可以量测 eMMC CLK/CMD 讯号？-J- “上.a 二 mo。iJtdtoI|)( Ma J J M Ma X M Wte (!d (Ml:CM| | UL1FM | ILMn | 1LUAW | |OXJ*(MOXJ | io_m | tunm | lLum | iriun | iroi*iMMC more easily1. This appendix i
15、s just guidelino for e MMC connection This value and schematic can be changed depending on the system environment2. VDDI Capacitor is min 0.47uF3. Recommend OQ for resistance on CLK,CMD,DATO line to reduce noiseC-ICLKRO1 2CMD0 ohm1 R22OATO迪ohm1 R32DM1D ohmDm2HATSIW4DATBIW7HW RESETDATO检查 EXT_CSD179：
16、BOOT_PARTITION_ENABLE Valueeg:ROCKCHIP3066 power on would drive CMD line low to enter boot mode.ROCHCHIP 3066 would switch EXT_CSD162 to 0x01 every power on.Fail WaveformI1.1.Taijirr:i.liciiin -Tie HMD hi上宀 I.till T QW fiw.irwl. rie pcrwepUfi 軒IIuimihu tMLXi u-ilh lh=1*14胪 l ! HI -ar hkeiI iihi of I
17、lbliFc fde md fm 11 il mHiij/k丄 i?i - .-!：山垩ilRD 也占Hb 呀去 f I fi2,庞1旧(I ?) hafixc ifw 皿俺龄nd.氓 泌(1($ H呻 i-KopnLrt- ill? I Inwi incde ；、hriTyi ini 311J “Erb |irepiriLip Imii diln inlenply Tlier*Flitioii 由rai v- limb lb? u i：-si fl *111 im-isJ Ilv b.iOi Jyl h ：w 闊 胡閃曰sji 鼻:冲 nip EXT_5I Ia 恫 | L?J|. I.:、
18、 5:J. Hit dars flute (lie tiUfeFtr mil rvAd dici昨 bcux 4fvvtlio 弹Jiiiui I 叱cm!乂口 lb* I .W w JLn *Spec ：计城i、k 顷时 rTw th-ai应h S 伽 伽常咒帕 du DATTh# liiaiNf lOUI &师 111# CMD boeILOW Hi i?iJ 3U uf Ibv Ikkii 山i!：i Us iijii*：J uij.i*r u网卩u讪专uiOJv wHil bjl/ iwnihitiKiTFW Modification: BOOT_PARTITION_ENABLE 17
19、9 = 1 RST_n_FUNCTION 162 =1B、确认Host是否支持V45?-检查EXT_CSD_REV 192中版本，有的host仅支持到V4.41Err：ug通trcutigirisEd EXT_CSD structure version 6性* deulcc1 s initialization is failed-:ecnynistd EXT.CSD structure uersioti 6mczs诫 devir*s initialization is Vailed.Ermr： Ho MfiB is found at SDfltlC.Hiwt use fdisk cwiMnd
20、to wake partitions.Hit any key to stop autohtot ： Q nreccgnised EXTCSD structare ucrsian 6reading kernel.9. ttfC read： dcu * GBblock * L count 0 . Amrecognised EXT_CSDstructure uersion 6LiEwpletedunrecognised EXT_CSP structure uersion 丘 詁豐lTleu t ock 6. count 6B4 +. .unrecogntsed EXCCSD structure ue
21、zM 6cnnpleted jrt_rcrmtrtjq lage fonwt for boots* command KHfjR: can*t get kerne) inage!Dtcuzie vEXT CSD REVExtended CSD Revision255-7Reserved6Revision 1.6 (for MMC v4.5)5Revision 1.5 (for MMC v4.41)4Revision 1.4 fObsolete)3Revision 1.3 (for MMC v4.3)2Revision 1.2 (for MMC v-4.2)1Revision 1.1 (for M
22、MC v4.1)0Revision 1.0 (for MMC v4.0)Table 105 - Extended CSD reviaonsserialError： Ho HBB is found at SIVHMC. use fdisk connAiid to nakr partitions.imecoquised EXTjCSD structure uersion 6 tczsd dtKi ic?eJ s initia iion is fa i led.2.可以烧录无法启动A、确认eMMC容量是否满足平台要求？eg： Samsung S5PV210平台对eMMC最小容量有要求烧录后卡在开机画
23、面无法进入系统B、确认是否发生write timeout ?-平台对 write time 有要求，需要 eMMC 做 merger data 的动作，避免 write timeoutC、确认平台需要的 Boot Partition Size？-不同平台要求的 Boot Partition Size 不同：1MB/2MB/4MB-Check EXT_CSD BOOT_SIZE_MULTI226 定义的 Boot Partition Size 是否符合要求？D、确认 RPMB Size？-有些手机(如HTC)对RPMB Size有要求(0K, 128K, 256K)3. 烧录系统后，无法打开 USB 连接，访问 user area- 确认平台对 report user data area capacity 的要求？eg：Rockchip3066 要求 report user data area capacity 必须与 WP group boundary 对齐, 即 EXT_CSD SEC_COUNT 215:212是 512 的倍数8:38A精我化声債ifi鼻
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