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command class is supported. |
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•READ_BL_LEN
The maximum read data block length is computed as 2READ_BL_LEN. The maximum block length might therefore be in the range 512...2048 bytes (see Chapter 4.11 for details). Note that in SD Memory Card the WRITE_BL_LEN is always equal to READ_BL_LEN
•READ_BL_PARTIAL (always = 1 in SD Memory Card)
Partial Block Read is always allowed in SD Memory Card. It means that smaller blocks can be used as well. The minimum block size will be one byte.
•WRITE_BLK_MISALIGN
Defines if the data block to be written by one command can be spread over more than one physical block of the memory device. The size of the memory block is defined in WRITE_BL_LEN.
WRITE_BLK_MISALIGN=0 signals that crossing physical block boundaries is invalid. WRITE_BLK_MISALIGN=1 signals that crossing physical block boundaries is allowed.
•READ_BLK_MISALIGN
Defines if the data block to be read by one command can be spread over more than one physical block of the memory device. The size of the memory block is defined in READ_BL_LEN.
READ_BLK_MISALIGN=0 signals that crossing physical block boundaries is invalid. READ_BLK_MISALIGN=1 signals that crossing physical block boundaries is allowed.
•DSR_IMP
Transcend Information Inc. | 12 |