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參數(shù)資料
| 型號： | MC28U256NACA |
| 廠商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 英文描述： | MultiMediaCard Specification |
| 中文描述： | 多媒體卡規(guī)格 |
| 文件頁數(shù)： | 33/66頁 |
| 文件大小： | 1422K |
| 代理商： | MC28U256NACA |
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MultiMediaCard
TM
33
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
CMD29 ac
[31:0] data
address
R1b
CLR_WRITE_PROT
CMD30 adtc
[31:0] write
protect data
address
R1
(7)
SEND_WRITE_PR
OT
CMD31 Reversed
CMD35 ac
[31:0] data
address
[31:0]
address
R1
TAG_ERASE_GRO
UP_START
TAG_ERASE_GRO
UP_END
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
block is set by the SET_BLOCK_LEN
command.
Indicates to the card that the next command
is an application specific command rather
than a standard command
These Samsung MultiMediaCard do not
support this command
Used either to transfer a data block to the
card or to get a data block from the card for
general purpose / application specific
commands. The size of the data block shall
be set by the SET_BLOCK_LEN command.
These Samsung MultiMediaCard do not
support this command
CMD36 ac
data
R1
CMD38 ac
CMD42 adtc
[31:0] stuff bits R1b
[31:0] stuff bits R1b
ERASE
LOCK_UNLOCK
CMD55
ac
[31:16] RCA
[15:0] stuff
bits
R1
APP_CMD
CMD56 adtc
[31:1] stuff
bits.
[0]: RD/WR
R1b
GEN_CMD
Note :
1. CID register consists of 128 bits (starting with MSB, it is preceded by an additional start bit, ends with an end bit)
2. CSD register consists of 128 bits (starting with MSB, it is preceded by an additional start bit, ends with an end
bit)
3. This command is indicating the busy status of the MultiMediaCard via the data channel.
4. The default block length is as specified in the CSD.
5. The data transferred must not cross a physical block boundary unless RD_BLK_MISALIGN is set in the CSD.
6. The data transferred must not cross a physical block boundary unless WRITE_BLK_MISALIGN is set in the CSD.
7. 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.
4.7
Read, Write and Erase Time-out Conditions
The times after which a time-out condition for read/write/erase operations occurs are (card indepen-
dent) 10 times longer than the access/program times for these operations given below. A card shall
complete the command within this time period, or give up and return an error message. If the host does
not get a response within the defined time-out it should assume the card is not going to respond
anymore and try to recover (e.g. reset the card, power cycle, reject, etc.). The typical access and
program times are defined as follows
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PDF描述 |
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| MC28U512HACA | MultiMediaCard Specification |
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| MC2DU016HACA | MultiMediaCard Specification |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC28U256NACA-0QC00 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:MultiMediaCard Specification |
| MC28U256NACB-0QC00 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:MultiMediaCard Specification |
| MC28U256NACC-0QC00 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:MultiMediaCard Specification |
| MC28U256NAFA-0QC00 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:MultiMediaCard Specification |
| MC28U256NAFB-0QC00 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:MultiMediaCard Specification |
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