HB28K032MM3 Datasheet, PDF (31/91 Pages) Renesas Technology Corp – MultiMediaCard 32 MByte/64 MByte/128 MByte/256 MByte/512 MByte

HB28K032/L064/J128/J256/J512MM3, HB28K032/L064/J128/J256RM3
Write Protection Commands (class 6)
CMD
index Type Argument
Resp Abbreviation
Command description
CMD28 ac
[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 ac
[31:0] data
address
R1b
CLR_WRITE_PROT If the card provides write protection
features, this command clears the
write protection bit of the addressed
group.
CMD30 adtc [31:0] write
R1
protect data
address
SEND_WRITE_PR
OT
If the card provides write protection
features, this command asks the card
to send the status of the write
protection bits.*¹
Note:
1. 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. The last (least
significant) bit of the protection bits corresponds to the first addressed group. If the addresses
of the last groups are outside the valid range, then the corresponding write protection bits shall
be set to zero.
Lock Card Command (class 7)
CMD
index Type Argument
CMD42 adtc [31:0] stuff bits
Resp
R1b
Abbreviation
LOCK_UNLOCK
Command description
Used to set/reset the password or
lock/unlock the card. The size of the
data block is set by the
SET_BLOCK_LEN command.
Rev.0.02, Sep.15.2004, page 31 of 89