SanDisk SDMB-16, Руководство по эксплуатации продукта

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MultiMediaCard Product Manual
SanDisk MultiMediaCard Product Manual Rev. 2 © 2000 SANDISK CORPORATION 67
CMD18 No
CMD19 reserved
CMD20 No
CMD21.
. .
CMD23
reserved
CMD24 Yes [31:0] data
address R1
3
WRITE_BLOCK Writes a block of the size selected by the
SET_BLOCKLEN command.
4
CMD25 No
CMD26 No
CMD27 Yes None R1
3
PROGRAM_CSD Programming of the programmable bits of
the CSD.
CMD28 Yes [31:0] data
address R1b SET_WRITE_PROT 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).
CMD29 Yes [31:0] data
address R1b CLR_WRITE_PROT If the card has write protection features,
this command clears the write protection
bit of the addressed group.
CMD30 Yes [31:0] write
protect data
address R1 SEND_WRITE_
PROT If the card has write protection features,
this command asks the card to send the
status of the write protection bits.
5
CMD31 reserved
CMD32 Yes [31:0] data
address R1 TAG_SECTOR_
START Sets the address of the first sector of the
erase group.
CMD33 Yes [31:0] data
address R1 TAG_SECTOR_
END Sets the address of the last sector in a
continuous range within the selected
erase group, or the address of a single
sector to be selected for erase.
CMD34 Yes [31:0] data
address R1 UNTAG_SECTOR Removes one previously selected sector
from the erase selection.
CMD35 Yes [31:0] data
address R1 TAG_ERASE_
GROUP_START Sets the address of the first erase group
within a range to be selected for erase.
CMD36 Yes [31:0] data
address R1 TAG_ERASE_
GROUP_END Sets the address of the last erase group
within a continuous range to be selected
for erase.
CMD37 Yes [31:0] data
address R1 UNTAG_ERASE_
GROUP Removes one previously selected erase
group from the erase selection.
3) Data followed by data response plus busy.
4) The start address must be aligned on a sector boundary The block length is always 512 bytes.
5) 32 write protection bits (representing 32 write protect groups starting at the specified address) followed by 16
CRC bits are transferred in a payload format via the data line.