TS256M~
2GUSD
microSD Memory Card
• WRITE_BL_PARTIAL
Defines whether partial block sizes can be used in block write commands.WRITE_BL_PARTIAL=’0’ means that only the
WRITE_BL_LEN block size and its partial derivatives,in resolution of units of 512 bytes, can be used for block oriented
data write.WRITE_BL_PARTIAL=’1’ means that smaller blocks can be used as well. The minimum block sizeis one
byte.
• FILE_FORMAT_GRP
Indicates the selected group of file formats. This field is read-only for ROM.
• COPY
Defines if the contents is original (= ‘0’) or has been copied (=’1’). The COPY bit for OTP and MTPdevices, sold to end
consumers, is set to ‘1’ which identifies the card contents as a copy. The COPY bit is an one time programmable bit.
• PERM_WRITE_PROTECT
Permanently protects the whole card content against overwriting or erasing (all write and erase commands for this card
are permanently disabled). The default value is ‘0’, i.e. not permanently write protected.
• TMP_WRITE_PROTECT
Temporarily protects the whole card content from being overwritten or erased (all write and erase commands for this
card are temporarily disabled). This bit can be set and reset. The default value is ‘0’, i.e. not write protected.
• FILE_FORMAT
Indicates the file format on the card. This field is read-only for ROM. The following formats are defined:
• CRC
The CRC field carries the check sum for the CSD contents.
The checksum has to be recalculated by the host for any CSD modification. The default corresponds to the initial CSD
contents.
16
Transcend Information Inc.
TRANSCEND [ TRANSCEND INFORMATION. INC. ]
