Instruction/ maintenance manual of the product SD128 SanDisk
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SanDisk SD-ROM Product Manual Revision 1.0 SanDisk Corporation Corporate Headquarters . 601 McCarth y Boulevard . Milpitas, California 95035 Phone: 408-801-1000 .
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.
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.
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.
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.
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.
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.
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.
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.
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.
SanDisk Confidential.
An important point after buying a device SanDisk SD128 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought SanDisk SD128 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data SanDisk SD128 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, SanDisk SD128 you will learn all the available features of the product, as well as information on its operation. The information that you get SanDisk SD128 will certainly help you make a decision on the purchase.
If you already are a holder of SanDisk SD128, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime SanDisk SD128.
However, one of the most important roles played by the user manual is to help in solving problems with SanDisk SD128. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device SanDisk SD128 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
