Data Sheet

• PSN
The Serial Number is 32 bits of binary number.
PSN Number can be customized by Transcend
• MDT
The manufacturing date composed of two hexadecimal digits, one is 8 bit representing the year(y)
and the other is four bits representing the month(m).
The “m” field [11:8] is the month code. 1 = January.
The “y” field [19:12] is the year code. 0 = 2000.
As an example, the binary value of the Date field for production date “April 2001” will be:
00000001 0100.
MDT can be customized by Transcend
• CRC
CRC7 checksum (7 bits).
3.3 CSD register
The following sections describe the CSD fields and the relevant data types for the standard and High Capacity
SD Memory Card. CSD Version 1.0 is applied Capacity SD Memory Card and CSD Version is applied to 2.0 is
applied to only the High Capacity SD Memory Card. The field name in parenthesis is set to fixed value and
indicates that the host is not necessary to refer these fields. The fixed values enables host, which refers to
these fields, to keep compatibility to CSD Version 1.0. The Cell Type field is coded as follows: R = readable, W(1)
= writable once, W = multiple writable.
3.3.1 CSD Register Structure
CSD_STRUCTURE CSD Structure version Card capacity
0 CSD Version1.0 Standard Capacity
1 CSD Version2.0 High Capacity and Extended Capacity
2-3 reserved