- 您現在的位置：買賣IC網 > PDF目錄382300 > MC28U064HACA-0QC00 (SAMSUNG SEMICONDUCTOR CO. LTD.) MultiMediaCard Specification PDF資料下載
參數資料
| 型號： | MC28U064HACA-0QC00 |
| 廠商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 英文描述： | MultiMediaCard Specification |
| 中文描述： | 多媒體卡規格 |
| 文件頁數： | 37/66頁 |
| 文件大?。?/td> | 1422K |
| 代理商： | MC28U064HACA-0QC00 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁當前第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁
MultiMediaCard
TM
37
defined. The card will continuously transfer data blocks until a stop transmission command is
received.
* Multiple block read with pre-defined block count : The card will transfer the requested number of
data blocks, terminate the transaction and return to transfer state. Stop command is not required at
the end of this type of multiple block read, unless terminated with an error. In other to start multiple
block read with pre-defined block count, the host must use the SET_BLOCK COUNT
command(CMD23) immediately preceding the READ_MULTIPLE_BLOCK(CMD18) command.
Otherwise this card will start an open-ended multiple block read which can be stopped using the
STOP_TRANSMISSION command.
4.9.2 Block Write
Block write (CMD24 - 27) means that one or more blocks of data are transferred from the host to the
card with a CRC appended to the end of each block by the host. A card supporting block write must
always be able to accept a block of data defined by WRITE_BLK_LEN. If the CRC fails, the card will
indicate the failure on the DAT line; the transferred data will be discarded and not written and all further
transmitted blocks (in multiple block write mode) will be ignored. The write operation will also be
aborted if the host tries to write over a write-protected area. In this case, however, the card will set the
WP_VIOLATION bit. Programming of the CID and CSD register does not require a previous block
length setting. The transferred data is also CRC protected. The MultiMediaCard write operation follows
some special rules:
WRITE_MULTIPLE_BLOCK(CMD25) starts a transfer of several consecutive blocks. Two types of
multiple block write transactions, identical to the multiple block read, are defined (the host can use
either on at any time)
*
Open-ended Multiple block write : The number of blocks for the write multiple block operation is not
defined. The card will continuously accept and program data block until a stop transmission
command is received.
* Multiple block write with pre-defined block count : The card will transfer the requested number of data
blocks, terminate the transaction and return to transfer state. Stop command is not required at the
end of this type of multiple block write, unless terminated with an error. In other to start multiple
block write with pre-defined block count, the host must use the SET_BLOCK COUNT
command(CMD23) immediately preceding the WRITE_MULTIPLE_BLOCK(CMD25) command.
Otherwise this card will start an open-ended multiple block write which can be stopped using the
STOP_TRANSMISSION command.
The host can abort writing at any time, within a multiple block operation regardless of the its type.
Transaction abort is done by sending the stop transmission command. If a multiple block write with
predefined block count is aborted, the data in the remaining blocks is not defined.
4.9.3 Erase
The erasable unit is the Erase Group. Erase group is measured in write blocks which are the basic
writable units of the card. The size of the Erase group is a card specific parameter and defined in the
CSD.
The host can erase a contiguous range of Erase Groups. Starting the erase process is a three steps
sequence.
First
the
host
defines
the
ERASE_GROUP_START(CMD35) command, next it defines the last address of the range using the
start
address
of
the
range
using
the
相關PDF資料 |
PDF描述 |
|---|---|
| MC56U064HACA-0QC00 | MultiMediaCard Specification |
| MC2DU064HACA-0QC00 | MultiMediaCard Specification |
| MC28U256HACA-0QC00 | MultiMediaCard Specification |
| MC2DU512HACA-0QC00 | MultiMediaCard Specification |
| MC1GU512HACA-0QC00 | MultiMediaCard Specification |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MC28U064HACB-0QC00 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:MultiMediaCard Specification |
| MC28U064HACC-0QC00 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:MultiMediaCard Specification |
| MC28U064HAFA-0QC00 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:MultiMediaCard Specification |
| MC28U064HAFB-0QC00 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:MultiMediaCard Specification |
| MC28U064HAFC-0QC00 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:MultiMediaCard Specification |
發布緊急采購，3分鐘左右您將得到回復。