Card Specific Data Register - SanDisk 2GB - 2GB Micro Secure Digital Card Product Manual

SanDisk microSD™, microSDHC™ and microSDXC™ cards
Name
Manufacturer ID
(MID)
OEM/Application ID
(OID)
Product Name
(PNM)
Product Revision
PRV)
Serial Number
(PSN)
Reserved
Manufacturer Date
Code (MDT)
CRC7 Checksum
(CRC)
Not used, always 1
3.5.3

Card Specific Data Register

The Card Specific Data (CSD) Register configuration information is required to
access card data. The CSD defines the data format, error correction type, maximum
data access time, etc. The field structures of the CSD Register vary depending on the
physical specifications and card capacity. The CSD_STRUCTURE field in the CSD
Register indicates which structure version is used. Table 9 shows the version number
as it relates to the CSD structure. Refer to Section 5.3.1 of the SDA Physical Layer
Specification, Version 3.01 for more information.
CSD_Structure
0
1
2-3
Table 8 provides an overview of the CSD Register. More field-specific information
can be found in Section 5.3.2 of the SDA Physical Layer Specification, Version 3.01.
January 2012 Version 2.5 © 2008 - 2012 SanDisk Corporation. SanDisk Confidential, subject to all applicable non-disclosure agreements 13
Table 6: CID Register Definitions
Type Width CID Value
Binary 8 0x03
ASCII 16 SD ASCII Code
0x53, 0x44
ASCII 40 SU64G
SU32G
SU16G
SU08G
SU04G
SU02G
SU01G
BCD 8 Product Revision xx
Binary 32 Product serial
number
- 4 -
BCD 12 Manufacture date
(for example,
April 2001=0x014)
Binary 7 CRC7
- 1 -
Table 7: CSD Register Structure
CSD Structure Version
CSD Version 1.0
CSD Version 2.0
Reserved
Comments
Manufacturer IDs are
controlled and assigned by
the SD-3C, LLC
Identifies the card OEM
and/or the card contents. The
OID is controlled and
assigned by the SD-3C, LLC
Five-character ASCII string
See Section 5.2 in the SDA
Physical Layer Specification,
Version 3.01.
32-bit unsigned integer
-
Manufacturing date–yym
(offset from 2000)
Calculated
-
Valid for SD Card Physical
Specification / Card Capacity
Version 1.01 to 1.10
Version 2.00/Standard Capacity
Version 2.00/High Capacity and
Extended Capacity
-
OEM Product Manual
2.5