MC56U032DCCA Datasheet, PDF (31/64 Pages) Samsung semiconductor – Dual Voltage MultiMediaCard Specification

MultiMediaCard^TM
[15:0] stuff bits
CMD16 ac [31:0] block R1
length
CMD17 adtc [31:0] data
R1
address
CMD18 adtc [31:0] data
R1
address
CMD19 reserved
CMD20 adtc [31:0] data
R1
address
CMD21
…
CMD22
CMD23
reserved
ac [31:16] set to 0 R1
[15:0] number
of blocks
CMD24 adtc
CMD25 adtc
CMD26 adtc
[31:0] data
R1
address
[31:0] data
R1
address
[31:0] stuff bits R1
CMD27 adtc [31:0] stuff bits R1
CMD28 ac [31:0] data
R1b
address
CMD29 ac [31:0] data
R1b
address
CMD30 adtc
[31:0] write
protect data
address
R1⁽⁷⁾
CMD31 Reversed
CMD35 ac
CMD36 ac
[31:0] data
R1
address
[31:0] data R1
address
CMD38 ac [31:0] stuff bits R1b
CMD42 adtc [31:0] stuff bits R1b
TE
SET_BLOCKLEN
READ_SINGLE_BL
OCK
READ_MULTIPLE_
BLOCK
WRITE_DAT_UNTIL
_STOP
protect the card stack against
communications breakdowns.
Selects a block length (in bytes) for all
following block commands (read and write).
*4
Reads a block of the size selected by the
SET_BLOCKLEN command. ^*5
Continuously send blocks of data until
interrupted by a stop.
Writes data stream from the host, starting at
the given address, until a
STOP_TRANSMISSION follows.
These Samsung MultiMediaCard do not
support this command
SET_BLOCK_COU
NT
WRITE_BLOCK
WRITE_MULTIPLE_
BLOCK
PROGRAM_CID
PROGRAM_CSD
SET_WRITE_PROT
CLR_WRITE_PROT
SEND_WRITE_PR
OT
Defines the number of blocks which are
going to be transferred in the immediatedly
succeeding multiple block read or write
command.
Writes a block of the size selected by the
SET_BLOCKLEN command. ^*6
Continuously writes blocks of data until a
STOP_TRANSMISSION follows.
Programming of the card identification
register. This command is only done once
per MultiMediaCard card. The card has
some hardware to prevent this operation
after the first programming. Normally this
command is reserved for the manufacturer.
Programming of the programmable bits of
the CSD.
If the card has write protection features, this
command sets the write protection bit of the
addressed group. The properties of write
protection are coded in the card specific
data (WP_GRP_SIZE).
If the card provides write protection
features, this command clears the write
protection bit of the addressed group.
If the card provides write protection
features, this command asks the card to
send the status of the write protection bits.
*7
TAG_ERASE_GRO
UP_START
TAG_ERASE_GRO
UP_END
ERASE
LOCK_UNLOCK
Sets the address of the first erase group
within a range to be selected for erase
Sets the address of the last erase group
within a continuous range to be selected for
erase.
Erases all previously selected sectors
Used to set/reset the password or
lock/unlock the card. The size of the data
31