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參數(shù)資料
| 型號(hào)： | MC2GH512NMCA-2SA00 |
| 廠商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 英文描述： | SAMSUNG MultiMediaCard |
| 中文描述： | 三星多媒體 |
| 文件頁(yè)數(shù)： | 8/102頁(yè) |
| 文件大小： | 1384K |
| 代理商： | MC2GH512NMCA-2SA00 |
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MultiMediaCard
TM
8
Sep.22.2005
Revision 0.3
3.8 MultiMediaCard Mode
The SAMSUNG MultiMediaCard is fully compliant with MultiMediaCard standard specification V4.1
3.8.1 MultiMediaCard Standard Compliance
The MultiMediaCard supports the operation condition verification sequence defined in the MultiMediaCard standard spec-
ifications. The MultiMediaCard host should define an operating voltage range that is not supported by the MultiMedi-
aCard. It will put itself in an inactive state and ignore any bus communication. The only way to get the card out of the
inactive state is by powering it down and up again. In addtion the host can explicitly send the card to the inactive state by
using the GO_INACTIVE_STATE command.
3.8.2 Negotiating Operation Conditions
MultiMediaCard status is stored in a 32 bit status register which is sent as the data field in the card respond to host com-
mands. Status register provides information about the card’s current state and completion codes for the last host com-
mand. The card status can be explicityly read(polled) with the SEND_STATUS command.
3.8.3 Card Status
The basic unit of data transfer to/from the MultiMediaCard is one byte. All data transfer operations which require a block
size always define block lenghs as integer multiples of bytes. Some special funcions need other partition granularity.
For block oriented commands, the following definition is used:
Block: is the unit which is related to the block oriented read and write commands. Its size is the number of bytes which
will be transferred when one block command is sent by host. The size of a block is either programmable or fixed. The
information about allowed block sizes and the programmability is stored in the CSD.
For R/W cards, special erase and write protect commands are defined:
The granularity of the erasable units is the Erase Group: The smallest number of consecutive write blocks which can be
addressed for erase. The size of the Erase Group is card specific and stored in the CSD.
The granularity of the Write Protected units is the WP-Group: The minimal unit which may be individually write pro-
tected. Its size is defined in units of erase groups. The size of a WP-Group is card specific and stored in the CSD.
3.8.4 Memory Array Partitioning
The MultiMediaCard supports two read/write modes.
In this mode the host reads or write one data block in a pre-specified length block transmission is protected with 16bit
CRC which is generated by the sending unit and checked by the receiveing unit. Misalignment is not allowed. Every data
block must be contained in a single memroy sector. The block lenght for write opertaion must be identical to the sector
size and the start address aligned to a sector boundary.
Single Block Mode
3.8.5 Read and Write Operations
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相關(guān)代理商/技術(shù)參數(shù) |
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| MC2GU01GNMCA-0QC00 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:MultiMediaCard Specification |
| MC2GU512NMCA-0QC00 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:MultiMediaCard Specification |
| MC2M | 制造商:G & J HALL 功能描述:STEP DRILL 10-20MM 1MM STEP 制造商:G & J HALL 功能描述:STEP DRILL, 10-20MM, 1MM STEP 制造商:G & J HALL 功能描述:STEP DRILL, 10-20MM, 1MM STEP; Drill Bit Size Metric:10mm; Overall Length:77.5mm; SVHC:No SVHC (19-Dec-2012); Drill Bit Type:Step; Material:Steel; Material Thickness Max:4mm; Range:10mm - 20mm; Range:10mm - 20mm; Shank Dia:9mm; ;RoHS Compliant: NA |
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| MC3 | 制造商:Omron Corporation 功能描述:CONTROLLER,DIN MOUNT,24 VDC,SAFETY MAT CONTROLLER 制造商:Carlo Gavazzi 功能描述:MAGNETIC RECTANGULAR PROX. SENSOR |
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