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SanDisk SD032 manual

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Table of contents for the manual

  • Page 1

    SanDisk SD-ROM Product Manual Revision 1.0 SanDisk Corporation Corporate Headquarters . 601 McCarth y Boulevard . Milpitas, California 95035 Phone: 408-801-1000 . Fax: 408-801 -8657 www.sandisk.com SanDisk Confidential[...]

  • Page 2

    SanDisk® Corporation genera l po licy does not recommend th e use of its produ cts in life support applications wh ere in a failure or malfunction of the produ ct may directly threaten life or injury. Per SanDisk Terms and Cond ition s of Sale, the user of SanDisk produ cts in life support applica t i ons assumes all risk of such use and indemnifi[...]

  • Page 3

    1 SD-ROM Card Overview 1.1 Introduction SanDisk SD-ROM Cards provide permanent and se cure read-only data storage for consumer electronic and personal computer applications. SanDisk SD-ROM Cards are based on SanDisk’s unique 3D one-time programmable (OTP) memory devices which safely store data for 100 years. This compares favorably with cards bas[...]

  • Page 4

    2 SanDisk SD-ROM Card Functional Description SanDisk SD-ROM Cards are compatible with the SD specifications, with some changes necessary for a read-only memory. In an SD host system, the host controls all communication between itself and the cards. For detailed information, refer to Section 4 of the SDA Physical Layer Specification, Version 2.00. T[...]

  • Page 5

    2.7 Card State Transitions SanDisk SD-ROM Cards operate the same as standard SD cards, where the state transition is dependent on the received command along with responses sent on the command line. The transitions are defined in Section 4.8 of the SDA Physical Layer Specification, Versio n 2.00 In Card Identification Mode, the host operates the car[...]

  • Page 6

    3 SanDisk SD-ROM Card Specifications 3.1 Operating Specifications The table below summarizes the SD-ROM operating specifications. Parameter Value Notes Supply Voltage 2.0 – 3.6v during card identification for versi on 1.1 cards 2.7 – 3.6v all supported commands Operating Temperature -25 – 85 ° C Storage Temperature -40 – 85 ° C Data Reten[...]

  • Page 7

    Register Abbreviation Width (in bits) Register Name CID 128 Card IDentification CSD 128 Card-Specific Data SCR 64 SD Configuration Register RCA 16 Relative Card Address OCR 32 Operation Condition Register SSR 512 SD Status Register CSR 32 Card Status Register All card registers are also accessible in SPI Mode. Their format is identical to the forma[...]

  • Page 8

    Field Value Comments CSD_STRUCTURE 1.0 CSD structure Reserved Reserved TAAC 1.5ms Data read acce ss time – 1 NSAC 0 Data read acce ss time – 2 in CLK cy cle s (NSAC*100) TRANS_SPEED 25MHz Maxi mum data transfer rate CCC 0x5F5 Card Command Cla s ses READ_BL_LEN 512 bytes Maximum read data block l ength READ_BL_PARTIAL Yes Partial blocks for read[...]

  • Page 9

    3.3.4 Card Status Register The Card Status Register (CSR) transmits the card's status information to the host. The CSR is defined in Section 4.10.1 in the SDA Physical Layer Specification, Version 2.00. 3.3.5 SD Status Register The SD Status Register (SSR) contains status bits that are related to the SD Card proprietary features and may be use[...]

  • Page 10

    connect external pullup resistors to all data lin es even if only DAT0 is to be used. Otherwise, non-expected high current consumption may occur due to the floating inputs of DAT1 and DAT2 (in case they are not used). For more details regarding the SD Bus topology, refer to Section 3.5.1 of the SDA Physical Layer Specification, Version 2.00. For mo[...]

  • Page 11

    SanDisk Confidential[...]