Transcend Information TS1~2GUSD-S3 - Manual (Page 12)

T T T S S S 1 1 1 ~ ~ ~ 2 2 2 G G G U U U S
S S D
D D -
- - S
S S 3
3 3
microSD Memory Card + Reader S3
Transcend Information Inc. 12
command class is supported.
• READ_BL_LEN
The maximum read data block length is computed as 2
READ_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