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4~32GB High Capacity Secure Digital Card

Transcend Information Inc.

18

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.

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.

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.

This field is set to 0. Host should not use this field.

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.

The following table lists the correspondence between the CSD entries and the command classes. A ‘+’ entry indicates

that the CSD field affects the commands of the related command class.