Datasheet

PSN
The Serial Number is 32 bits of binary number.
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.
CRC
CRC7 checksum (7 bits).
3. CSD Register
The CSD Regsiter shows Definition of the CSD for the High Capacity SD Memory Card and Extended Capacity SD
Memory Card (CSD Version 2.0). The following sections describe the CSD fields and the relevant data types for the High
Capacity SD Memory Card.
CSD Version 2.0 is applied to SDHC and SDXC Cards. 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.
Name
Field
Width
Value
Cell Type
CSD-slice
CSD structure
CSD_STRUCTURE
2
01b
R
[127:126]
reserved
-
6
00 0000b
R
[125:120]
data read access-time
(TAAC)
8
0Eh
R
[119:112]
data read access-time in CLK
cycles (NSAC*100)
(NSAC)
8
00h
R
[111:104]
max. data transfer rate
(TRAN_SPEED)
8
32h, 5Ah, 0Bh or 2Bh
R
[103:96]
card command classes*
CCC
12
01x110110101b
R
[95:84]
max. read data block length**
(READ_BL_LEN)
4
9
R
[83:80]
partial blocks for read allowed**
(READ_BL_PARTIAL)
1
0
R
[79:79]
write block misalignment**
(WRITE_BLK_MISALIGN)
1
0
R
[78:78]
read block misalignment**
(READ_BLK_MISALIGN)
1
0
R
[77:77]
DSR implemented**
DSR_IMP
1
x
R
[76:76]
reserved
-
6
00 0000b
R
[75:70]