MC56U032DCCA Datasheet, PDF (53/64 Pages) Samsung semiconductor – Dual Voltage MultiMediaCard Specification

MultiMediaCard^TM
CMD4
CMD5
CMD6
CMD7
CMD8
CMD9
CMD10
CMD11
CMD12
CMD13
CMD14
CMD15
CMD16
No
reversed
reversed
No
reversed
Yes
Yes
No
No
Yes
reversed
No
Yes
None
R1
None
R1
None
R2
[31:0] block length R1
SEND_CSD
SEND_CID
SEND_STATUS
SET_BLOCKLEN
CMD17
Yes
CMD18
Yes
[31:0]
address
[31:0]
address
data R1
data R1
READ_SINGLE_
BLOCK
READ_MULTIPLE
_BLOCK
CMD19
CMD20
CMD21…
CMD22
CMD23
reversed
No
reversed
Yes
[31:16] set to 0
R1
[15:0] number of
blocks
SET_BLOCK_CO
UNT
CMD24
Yes
CMD25
Yes
[31:0]
address
[31:0]
address
data R1b ^*3 WRITE_BLOCK
data R1
WRITE_MULTIPL
E_BLOCK
CMD26
No
CMD27
Yes
CMD28
Yes
None
[31:0]
address
R1b
data R1b
PROGRAM_CSD
SET_WRITE_
PROT
CMD29
Yes
[31:0]
address
data R1b
CLR_WRITE_
PROT
asks the selected card to send its
card-specific data (CSD)
asks the selected card to send its
card identification (CID)
asks the selected card to send its
status register.
selects a block length (in bytes)
for all following block commands
(read and write). ^*1
reads a block of the size selected
by the SET_BLOCKLEN
command. ^*2
continuously transfers data blocks
from card to host until interrupted
by a stop command or the
requested number of data blocks
transmitted.
Defines the number of blocks
which are going to be transferred
in the immediately exceeding
multiple block read or write
command.
writes a block of the size selected
by the SET_BLOCKLEN
command. ^*4
continuously writes blocks of data
until a “Stop Tran” Token or the
requested number of blocks
received.
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 has write protection
features, this command clears the
write protection bit of the
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