SDSDJ-512 SanDisk, SDSDJ-512 Datasheet - Page 31

• Manufacturer Part Number: SDSDJ-512
• Description: MEMORY CARD SD 512MB
• Manufacturer: SanDisk

Specifications of SDSDJ-512

• Memory Size: 512MB
• Memory Type: Memory Card - Standard SD™
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

© 2007 SanDisk Corporation
SanDisk SD Card Product Family Product Manual
Card Status Register
SD Status Register
Relative Card Address Register
SD Card Configuration Register
SD Card Product Family Registers in SPI Mode
The Card Status Register (CSR) transmits the card's status information (which may be stored
in a local status register) to the host. The CSR is defined in Section 4.10.1 in the SDA Physical
Layer Specification, Version 2.00.
The SD Status Register (SSR) contains status bits that are related to the SD Card proprietary
features and may be used for future applications. The SD Status structure is described in
Section 4.10.2 in the SDA Physical Layer Specification, Version 2.00.
The 16-bit Relative Card Address (RCA) Register carries the card address published by the
card during the card identification. Refer to Section 5.4 in the SDA Physical Layer
Specification, Version 2.00 for more information.
The SD Card Configuration Register (SCR) is in addition to the CSD Register. The SCR
provides information about special features in the SanDisk SD Card products. For more
information, refer to Section 5.6 in the SDA Physical Layer Specification, Version 2.00.
All card registers are accessible in SPI Mode. Their format is identical to the format in the SD
Bus Mode, however a few fields are irrelevant in SPI Mode. In SPI Mode, the Card Status
Register has a different, shorter, format as well. Refer to Section 7.4 in the SDA Physical
Layer Specification, Version 2.00. for more details.Data Interchange Format and Card Sizes
In general, a file system provides structure for data in SanDisk SD Card products. The SD
Card File System Specification, published by the SDA, describes the file format system that is
implemented in the SanDisk SD Card products. In general, each card is divided into two
separate DOS-formatted partitions as follows:
•
•
User Area–used for secured and non-secured data storage and can be accessed by the user
with regular read/write commands.
Security Protected Area–used by content protection applications to save security related
data and can be accessed by the host using the secured read/write command after doing
authentication as defined in the SD Security Specification. The security protected area size
is defined by SanDisk as approximately one percent of the total size of the card.
3-9
Interface Description
Rev. 2.1, 07/07