“ Setting the Standard in Device Programming ”

eMMC

© 2013 BPM Microsystems

Architecture Memory organization CRC on the fly Registers (OCR, CID,CSD, ECSD) Device size (<=2GB, >2GB): Size calculation,

addressing, WRITE_PROTECT_GROUP_SIZE Command and response Partitioning Socket Modules, Algo notes,..etc.

Overview

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Architecture

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Memory organization

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Partitions

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CRC on the fly

Every sector (512 bytes) is followed by 16 bytes CRC16

Old algo: embed the CRC16 into data pattern using “image format tool”.

New algo: calculate CRC16 on the fly through Bios calls: _M_StartInjectEmmcCrcs _M_StopInjectEmmcCrcs

© 2013 BPM Microsystems

Registers

OCR (Access mode, card power up status bit (busy))

CID (device ID)

CSD (C_SIZE, C_SIZE_MULT ,READ_BL_LEN, ERASE_GRP_SIZE, ERASE_GRP_MULT,

WP_GRP_SIZE, COPY, FILE_FORMAT)

ECSD(HC_ERASE_GRP_SIZE, HC_WP_GRP_SIZE, SEC_COUNT, BUS_WIDTH, PARTITION_CONFIG, RST_n_FUNCTION, PARTITIONING_SUPPORT, PARTITIONS_ATTRIBUTE,

PARTITION_SETTING_COMPLETED, GP_SIZE_MULT, ENH_SIZE_MULT, ENH_START_ADDR)

© 2013 BPM Microsystems

Device size

<=2GB >2GB

Addressing Byte Sector (512Byte)

Size

Sector_count*512

WRITE PROTECT GROUP

SIZE

(WP_GRP_SIZE+1)*

(ERASE_GRP_SIZE+1)*

(ERASE_GRP_MULT+1)*

512 Byte

HC_WP_GRP_SIZE* HC_ERASE_GRP_SIZE*

512KB

© 2013 BPM Microsystems

Command and response

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Command and response

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Command and response

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R/W/E Commands

Single/multiple block read

Single/multiple block write

Erase (erase group and erase group mul)

© 2013 BPM Microsystems

Partitioning

© 2013 BPM Microsystems

Socket Modules, Algo notes

SM (169FBGF, 153FBGE, 100LBGB)-caps

Algo notes

“ Setting the Standard in Device Programming ”