SanDisk 4GB micro SDHC Memory Card for Product Manual - Page 20

SanDisk microSD™, microSDHC™ and microSDXC™ cards OEM Product Manual 2.5 Refer to Section 5.3.3, Table 5-16 of the SDA Physical Layer Specification, Version 3.01 for more detailed information. Table 9: CSD Register (CSD Version 2.0) Field Typical CSD Value Description CSD_STRUCTURE 2.0 - - CSD Structure Reserved TAAC 1.5 msec Data read access-time NSAC TRANS_SPEED 0 Standard Mode 25 MHz High Performance Mode 50MHz Ultra High Speed Mode 104MHz Data read access-time-2 in CLK cycles (NSAC*100) Maximum data transfer rate CCC READ_BL_LEN All (inc. WP, lock/unlock) 9 Card command classes Maximum read data block length READ_BL_PARTIAL Yes Partial blocks for read allowed WRITE_BLK_MISALIGN No READ_BLK_MISALIGN No Write block misalignment Read block misalignment DSR_IMP No DSR implemented C_SIZE 0 See SDA Physical Layer Specification Reserved Device size - 0 ERASE_BLK_EN 1 Reserved Erase single block enable SECTOR_SIZE 64 blocks Erase sector size WP_GRP_SIZE WP_GRP_ENABLE 000000b No Write protect group size Write protect group enable Reserved - Reserved for MMC compatibility R2W_FACTOR X4 WRITE_BL_LEN Write speed factor Maximum write data block length WRITE_BL_PARTIAL No Partial blocks for write allowed - - FILE_FORMAT_GRP 0 Reserved File format group COPY Has been copied PERM_WRITE_PROTECT Not protected Copy flag (OTP) Permanent write protection TMP_WRITE_PROTECT Not protected Temporary write protection FILE_FORMAT HD w/partition File format Reserved CRC CRC7 Reserved CRC - - 3.5.4 Card Status Register Not used, always "1" 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 3.01. January 2012 Version 2.5 © 2008 - 2012 SanDisk Corporation. SanDisk Confidential, subject to all applicable non-disclosure agreements 15